Inflection
Encyclopedia
In grammar
Grammar
In linguistics, grammar is the set of structural rules that govern the composition of clauses, phrases, and words in any given natural language. The term refers also to the study of such rules, and this field includes morphology, syntax, and phonology, often complemented by phonetics, semantics,...

, inflection or inflexion is the modification of a word to express different grammatical categories
Grammatical category
A grammatical category is a semantic distinction which is reflected in a morphological paradigm. Grammatical categories can have one or more exponents. For instance, the feature [number] has the exponents [singular] and [plural] in English and many other languages...

 such as tense
Grammatical tense
A tense is a grammatical category that locates a situation in time, to indicate when the situation takes place.Bernard Comrie, Aspect, 1976:6:...

, grammatical mood
Grammatical mood
In linguistics, grammatical mood is a grammatical feature of verbs, used to signal modality. That is, it is the use of verbal inflections that allow speakers to express their attitude toward what they are saying...

, grammatical voice, aspect
Grammatical aspect
In linguistics, the grammatical aspect of a verb is a grammatical category that defines the temporal flow in a given action, event, or state, from the point of view of the speaker...

, person
Grammatical person
Grammatical person, in linguistics, is deictic reference to a participant in an event; such as the speaker, the addressee, or others. Grammatical person typically defines a language's set of personal pronouns...

, number
Grammatical number
In linguistics, grammatical number is a grammatical category of nouns, pronouns, and adjective and verb agreement that expresses count distinctions ....

, gender
Grammatical gender
Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...

 and case
Grammatical case
In grammar, the case of a noun or pronoun is an inflectional form that indicates its grammatical function in a phrase, clause, or sentence. For example, a pronoun may play the role of subject , of direct object , or of possessor...

. Conjugation
Grammatical conjugation
In linguistics, conjugation is the creation of derived forms of a verb from its principal parts by inflection . Conjugation may be affected by person, number, gender, tense, aspect, mood, voice, or other grammatical categories...

 is the inflection of verb
Verb
A verb, from the Latin verbum meaning word, is a word that in syntax conveys an action , or a state of being . In the usual description of English, the basic form, with or without the particle to, is the infinitive...

s; declension
Declension
In linguistics, declension is the inflection of nouns, pronouns, adjectives, and articles to indicate number , case , and gender...

 is the inflection of noun
Noun
In linguistics, a noun is a member of a large, open lexical category whose members can occur as the main word in the subject of a clause, the object of a verb, or the object of a preposition .Lexical categories are defined in terms of how their members combine with other kinds of...

s, adjective
Adjective
In grammar, an adjective is a 'describing' word; the main syntactic role of which is to qualify a noun or noun phrase, giving more information about the object signified....

s and pronoun
Pronoun
In linguistics and grammar, a pronoun is a pro-form that substitutes for a noun , such as, in English, the words it and he...

s.

An inflection expresses one or more grammatical categories with an explicitly stated prefix, suffix, or infix, or another internal modification such as a vowel change. For example, the Latin ducam, meaning "I will lead", includes an explicit suffix, -am, expressing person (first), number (singular), and tense (future). The use of this suffix is an inflection. In contrast, in the English clause "I will lead", the word "lead" is not inflected for any of person, number, or tense; it is simply the bare form of a verb.

The inflected form of a word often contains both a free morpheme (a unit of meaning which can stand by itself as a word), and a bound morpheme
Bound morpheme
In morphology, a bound morpheme is a morpheme that only appears as part of a larger word; a free morpheme is one that can stand alone.Affixes are always bound. English language affixes are either prefixes or suffixes. E.g., -ment in "shipment" and pre- in "prefix"...

 (a unit of meaning which cannot stand alone as a verb). For example, the English word "cars" is a noun that is inflected for number, specifically to express the plural; the content morpheme "car" is unbound because it could stand alone as a word, while the suffix "s" is bound because it cannot stand alone as a word. These two morphemes together form the inflected word "cars".

Words that are never subjected to inflection are said to be invariant; for example, "must" is an invariant item: it never takes a suffix or changes form to signify a different grammatical category. Its category can only be determined by its context.

Requiring the inflections of more than one word in a sentence to be compatible according to the rules of the language is known as concord or agreement
Agreement (linguistics)
In languages, agreement or concord is a form of cross-reference between different parts of a sentence or phrase. Agreement happens when a word changes form depending on the other words to which it relates....

. For example, in "the choir sings", "choir" is a singular noun, so "sing" is constrained in the present tense to use the third person singular suffix "s".

Languages that have some degree of inflection are synthetic language
Synthetic language
In linguistic typology, a synthetic language is a language with a high morpheme-per-word ratio, as opposed to a low morpheme-per-word ratio in what is described as an isolating language...

s. These can be highly inflected, such as Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

, or weakly inflected, such as English
English language
English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

. Languages that are so inflected that a sentence can consist of a single highly inflected word (such as many American Indian languages) are called polysynthetic language
Polysynthetic language
In linguistic typology, polysynthetic languages are highly synthetic languages, i.e., languages in which words are composed of many morphemes. Whereas isolating languages have a low morpheme-to-word ratio, polysynthetic languages have extremely high morpheme-to-word ratios.Not all languages can be...

s. Languages in which each inflection conveys only a single grammatical category, such as Finnish
Finnish language
Finnish is the language spoken by the majority of the population in Finland Primarily for use by restaurant menus and by ethnic Finns outside Finland. It is one of the two official languages of Finland and an official minority language in Sweden. In Sweden, both standard Finnish and Meänkieli, a...

, are known as agglutinative language
Agglutinative language
An agglutinative language is a language that uses agglutination extensively: most words are formed by joining morphemes together. This term was introduced by Wilhelm von Humboldt in 1836 to classify languages from a morphological point of view...

s, while languages in which a single inflection can convey multiple grammatical roles (such as both nominative case and plural, as in Latin and German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

) are called fusional
Fusional language
A fusional language is a type of synthetic language, distinguished from agglutinative languages by its tendency to overlay many morphemes in a way that can be difficult to segment....

. Languages such as Mandarin Chinese that never use inflections are called analytic or isolating
Isolating language
An isolating language is a type of language with a low morpheme-per-word ratio — in the extreme case of an isolating language words are composed of a single morpheme...

.

Examples in English

In English most nouns are inflected for number
Grammatical number
In linguistics, grammatical number is a grammatical category of nouns, pronouns, and adjective and verb agreement that expresses count distinctions ....

 with the inflectional plural affix
Affix
An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivational, like English -ness and pre-, or inflectional, like English plural -s and past tense -ed. They are bound morphemes by definition; prefixes and suffixes may be separable affixes...

 -s (as in "dog" → "dog-s"), and most English verbs are inflected for tense
Grammatical tense
A tense is a grammatical category that locates a situation in time, to indicate when the situation takes place.Bernard Comrie, Aspect, 1976:6:...

 with the inflectional past tense affix -ed (as in "call" → "call-ed"). English also inflects verbs by affixation to mark the third person singular in the present tense (with -s), and the present participle (with -ing). English short adjectives are inflected to mark comparative and superlative forms (with -er and -est respectively). In addition, English also shows inflection by ablaut (sound change, mostly in verbs) and umlaut
I-mutation
I-mutation is an important type of sound change, more precisely a category of regressive metaphony, in which a back vowel is fronted, and/or a front vowel is raised, if the following syllable contains /i/, /ī/ or /j/ I-mutation (also known as umlaut, front mutation, i-umlaut, i/j-mutation or...

 (a particular type of sound change, mostly in nouns), as well as long-short vowel alternation. For example:
  • Write, wrote, written (marking by ablaut variation, and also suffixing in the participle
    Participle
    In linguistics, a participle is a word that shares some characteristics of both verbs and adjectives. It can be used in compound verb tenses or voices , or as a modifier...

    )
  • Sing, sang, sung (ablaut)
  • Foot, feet (marking by umlaut
    I-mutation
    I-mutation is an important type of sound change, more precisely a category of regressive metaphony, in which a back vowel is fronted, and/or a front vowel is raised, if the following syllable contains /i/, /ī/ or /j/ I-mutation (also known as umlaut, front mutation, i-umlaut, i/j-mutation or...

     variation)
  • Mouse, mice (umlaut)
  • Child, children (ablaut, and also suffixing in the plural)

Declension and conjugation

Two traditional grammatical terms refer to inflections of specific word classes:
  • Inflecting a noun
    Noun
    In linguistics, a noun is a member of a large, open lexical category whose members can occur as the main word in the subject of a clause, the object of a verb, or the object of a preposition .Lexical categories are defined in terms of how their members combine with other kinds of...

    , pronoun
    Pronoun
    In linguistics and grammar, a pronoun is a pro-form that substitutes for a noun , such as, in English, the words it and he...

    , adjective
    Adjective
    In grammar, an adjective is a 'describing' word; the main syntactic role of which is to qualify a noun or noun phrase, giving more information about the object signified....

     or determiner is known as declining it. The affixes may express number
    Grammatical number
    In linguistics, grammatical number is a grammatical category of nouns, pronouns, and adjective and verb agreement that expresses count distinctions ....

    , case, or gender
    Grammatical gender
    Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...

    .
  • Inflecting a verb
    Verb
    A verb, from the Latin verbum meaning word, is a word that in syntax conveys an action , or a state of being . In the usual description of English, the basic form, with or without the particle to, is the infinitive...

     is called conjugating it. The affixes may express tense
    Grammatical tense
    A tense is a grammatical category that locates a situation in time, to indicate when the situation takes place.Bernard Comrie, Aspect, 1976:6:...

    , mood
    Grammatical mood
    In linguistics, grammatical mood is a grammatical feature of verbs, used to signal modality. That is, it is the use of verbal inflections that allow speakers to express their attitude toward what they are saying...

    , voice, or aspect
    Grammatical aspect
    In linguistics, the grammatical aspect of a verb is a grammatical category that defines the temporal flow in a given action, event, or state, from the point of view of the speaker...

    .


An organized list of the inflected forms of a given lexeme is also called its declension
Declension
In linguistics, declension is the inflection of nouns, pronouns, adjectives, and articles to indicate number , case , and gender...

, or conjugation
Grammatical conjugation
In linguistics, conjugation is the creation of derived forms of a verb from its principal parts by inflection . Conjugation may be affected by person, number, gender, tense, aspect, mood, voice, or other grammatical categories...

, as the case may be.

Below is the declension of the English pronoun I, which is inflected for case and number.
singular plural
subjective I we
objective me us
possessive determiner my our
possessive pronoun
Possessive pronoun
A possessive pronoun is a part of speech that substitutes for a noun phrase that begins with a possessive determiner . For example, in the sentence These glasses are mine, not yours, the words mine and yours are possessive pronouns and stand for my glasses and your glasses, respectively...

mine ours
reflexive
Reflexive pronoun
A reflexive pronoun is a pronoun that is preceded by the noun, adjective, adverb or pronoun to which it refers within the same clause. In generative grammar, a reflexive pronoun is an anaphor that must be bound by its antecedent...

myself ourselves


The pronoun who is also inflected in formal English according to case. Its declension is defective, in the sense that it lacks a reflexive form.
singular & plural
subjective who
objective whom
possessive whose
reflexive


The following table shows the conjugation of the verb to arrive in the indicative mood
Grammatical mood
In linguistics, grammatical mood is a grammatical feature of verbs, used to signal modality. That is, it is the use of verbal inflections that allow speakers to express their attitude toward what they are saying...

. It is inflected for person, number, and tense by suffix
Suffix
In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns or adjectives, and verb endings, which form the conjugation of verbs...

ation.
Tense
Grammatical tense
A tense is a grammatical category that locates a situation in time, to indicate when the situation takes place.Bernard Comrie, Aspect, 1976:6:...

I you he, she, it we you they
Present arrive arrive arrives arrive arrive arrive
Past arrived arrived arrived arrived arrived arrived


The non-finite form
Non-finite verb
In linguistics, a non-finite verb is a verb form that is not limited by a subject and, more generally, is not fully inflected by categories that are marked inflectionally in language, such as tense, aspect, mood, number, gender, and person...

s arrive (bare infinitive), arrived (past participle) and arriving (gerund/present participle), although not inflected for person or number, can also be regarded as part of the conjugation of the verb to arrive. Compound verb form
Compound verb
In linguistics, a compound verb or complex predicate is a multi-word compound that acts as a single verb. One component of the compound is a light verb or vector, which carries any inflections, indicating tense, mood, or aspect, but provides only fine shades of meaning...

s such as I have arrived, I had arrived, or I will arrive can be included also in the conjugation of this verb for didactical purposes, but are not overt conjugations of arrive. The formula for deriving the covert form, in which the relevant inflections do not occur in the main verb, is
pronoun + conjugated auxiliary verb
Auxiliary verb
In linguistics, an auxiliary verb is a verb that gives further semantic or syntactic information about a main or full verb. In English, the extra meaning provided by an auxiliary verb alters the basic meaning of the main verb to make it have one or more of the following functions: passive voice,...

 + non-finite form of main verb.

Inflectional paradigm

A class of words with similar inflection rules is called an inflectional paradigm. Typically the similar rules amount to a unique set of affixes. Nominal inflectional paradigms are also called declensions, and verbal inflectional paradigms are also called conjugations. For example, in Old English nouns could be divided into two major declensions, the strong and the weak, inflected as is shown below:
gender and number
Masculine Neuter Feminine
Singular Plural Singular Plural Singular Plural
case
Grammatical case
In grammar, the case of a noun or pronoun is an inflectional form that indicates its grammatical function in a phrase, clause, or sentence. For example, a pronoun may play the role of subject , of direct object , or of possessor...

Strong Noun Declension
engel 'angel' scip 'ship' sorg 'sorrow'
Nominative engel englas scip scipu sorg sorga
Accusative engel englas scip scipu sorge sorga/sorge
Genitive engles engla scipes scipa sorge sorga
Dative engle englum scipe scipum sorge sorgum
case Weak Noun Declension
nama 'name' ēage 'eye' tunge 'tongue'
Nominative nama naman ēage ēagan tunge tungan
Accusative naman naman ēage ēagan tungan tungan
Genitive naman namena ēagan ēagena tungan tungena
Dative naman namum ēagan ēagum tungan tungum


The terms "strong declension" and "weak declension" are primarily relevant to well-known dependent-marking language
Dependent-marking language
A dependent-marking language is one where the grammatical marks showing relations between different constituents of a phrase tend to be placed on the dependents or modifiers, rather than the heads of the phrase in question. In a noun phrase, the head is the main noun and the dependents are the...

s (such as the Indo-European languages
Indo-European languages
The Indo-European languages are a family of several hundred related languages and dialects, including most major current languages of Europe, the Iranian plateau, and South Asia and also historically predominant in Anatolia...

, or Japanese
Japanese language
is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is a member of the Japonic language family, which has a number of proposed relationships with other languages, none of which has gained wide acceptance among historical linguists .Japanese is an...

). In dependent-marking languages, nouns in adpositional phrases can carry inflectional morphemes. (Adposition
Adposition
Prepositions are a grammatically distinct class of words whose most central members characteristically express spatial relations or serve to mark various syntactic functions and semantic roles...

s include prepositions and postpositions.) In head-marking language
Head-marking language
A head-marking language is one where the grammatical marks showing relations between different constituents of a phrase tend to be placed on the heads of the phrase in question, rather than the modifiers or dependents. In a noun phrase, the head is the main noun and the dependents are the...

s, the adpositions can carry the inflection in adpositional phrases. This means that these languages will have inflected adpositions. In Western Apache
Western Apache
Western Apache refers to the Apache peoples living today primarily in east central Arizona. Most live within reservations. The White Mountain Apache of the Fort Apache, San Carlos, Yavapai-Apache, Tonto Apache, and the Fort McDowell Mohave-Apache Indian reservations are home to the majority of...

 (San Carlos
San Carlos, Arizona
San Carlos is a census-designated place in Gila County, Arizona, United States. The population was 3,716 at the 2000 census.San Carlos is the largest community in and the seat of government for the San Carlos Apache Indian Reservation....

 dialect), the postposition -ká’ 'on' is inflected for person and number with prefixes.
Singular Dual Plural
1st shi-ká on me noh-ká on us two da-noh-ká 'on us'
2nd ni-ká on you nohwi-ká 'on you two' da-nohwi-ká 'on you all'
3rd bi-ká 'on him' da-bi-ká 'on them'


Traditional grammars have specific terms for inflections of nouns and verbs, but not for those of adposition
Adposition
Prepositions are a grammatically distinct class of words whose most central members characteristically express spatial relations or serve to mark various syntactic functions and semantic roles...

s.

Inflection vs. derivation

Inflection is the process of adding inflectional morphemes (smallest units of meaning) to a word, which indicate grammatical information (for example, case, number, person, gender or voice, mood, tense, or aspect). Derivation is the process of adding derivational morphemes, which create a new word from existing words, sometimes by simply changing grammatical category (for example, changing a noun to a

Words generally are not listed in dictionaries (in which case they would be lexical items) on the basis of their inflectional morphemes. But they often are listed on the basis of their derivational morphemes. For instance, English dictionaries list readable and readability, words with derivational suffixes, along with their root read. However, no traditional English dictionary lists book as one entry and books as a separate entry nor do they list jump and jumped as two different entries.

Inflectional morphology

Languages that add inflectional morphemes to words are sometimes called inflectional languages, which is a synonym for inflected languages. Morphemes may be added in several different ways:
  • Affix
    Affix
    An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivational, like English -ness and pre-, or inflectional, like English plural -s and past tense -ed. They are bound morphemes by definition; prefixes and suffixes may be separable affixes...

    ation, or simply adding morphemes onto the word without changing the root,
  • Reduplication
    Reduplication
    Reduplication in linguistics is a morphological process in which the root or stem of a word is repeated exactly or with a slight change....

    , doubling all or part of a word to change its meaning,
  • Alternation
    Alternation (linguistics)
    In linguistics, an alternation is the phenomenon of a phoneme or morpheme exhibiting variation in its phonological realization. Each of the various realizations is called an alternant...

    , exchanging one sound for another in the root (usually vowel sounds, as in the ablaut
    Indo-European ablaut
    In linguistics, ablaut is a system of apophony in Proto-Indo-European and its far-reaching consequences in all of the modern Indo-European languages...

     process found in Germanic strong verb
    Strong verb
    *for the strong inflection in various languages, see strong inflection*for irregular verbs, see irregular verb*for the strong verbs in Germanic languages, see Germanic strong verb...

    s and the umlaut
    Germanic umlaut
    In linguistics, umlaut is a process whereby a vowel is pronounced more like a following vowel or semivowel. The term umlaut was originally coined and is used principally in connection with the study of the Germanic languages...

     often found in noun
    Noun
    In linguistics, a noun is a member of a large, open lexical category whose members can occur as the main word in the subject of a clause, the object of a verb, or the object of a preposition .Lexical categories are defined in terms of how their members combine with other kinds of...

    s, among others).
  • Suprasegmental variations
    Prosody (linguistics)
    In linguistics, prosody is the rhythm, stress, and intonation of speech. Prosody may reflect various features of the speaker or the utterance: the emotional state of the speaker; the form of the utterance ; the presence of irony or sarcasm; emphasis, contrast, and focus; or other elements of...

    , such as of stress, pitch
    Pitch accent
    Pitch accent is a linguistic term of convenience for a variety of restricted tone systems that use variations in pitch to give prominence to a syllable or mora within a word. The placement of this tone or the way it is realized can give different meanings to otherwise similar words...

     or tone, where no sounds are added or changed but the intonation and relative strength of each sound is altered regularly. For an example, see Initial-stress-derived noun
    Initial-stress-derived noun
    Initial-stress derivation is a phonological process in English, wherein stress is moved to the first syllable of any of several dozen verbs when they become nouns or adjectives. This is called a suprafix in linguistics...

    .


Affixing includes prefixing (adding before the base), and suffixing (adding after the base), as well as the much less common infixing (inside) and circumfixing (a combination of prefix and suffix).

Inflection is most typically realized by adding an inflectional morpheme
Morpheme
In linguistics, a morpheme is the smallest semantically meaningful unit in a language. The field of study dedicated to morphemes is called morphology. A morpheme is not identical to a word, and the principal difference between the two is that a morpheme may or may not stand alone, whereas a word,...

 (that is, affix
Affix
An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivational, like English -ness and pre-, or inflectional, like English plural -s and past tense -ed. They are bound morphemes by definition; prefixes and suffixes may be separable affixes...

ation) to the base form (either the root
Root (linguistics)
The root word is the primary lexical unit of a word, and of a word family , which carries the most significant aspects of semantic content and cannot be reduced into smaller constituents....

 or a stem).

Indo-European languages (fusional)

All Indo-European languages
Indo-European languages
The Indo-European languages are a family of several hundred related languages and dialects, including most major current languages of Europe, the Iranian plateau, and South Asia and also historically predominant in Anatolia...

, such as Albanian
Albanian language
Albanian is an Indo-European language spoken by approximately 7.6 million people, primarily in Albania and Kosovo but also in other areas of the Balkans in which there is an Albanian population, including western Macedonia, southern Montenegro, southern Serbia and northwestern Greece...

, English
English language
English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

, German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

, Russian
Russian language
Russian is a Slavic language used primarily in Russia, Belarus, Uzbekistan, Kazakhstan, Tajikistan and Kyrgyzstan. It is an unofficial but widely spoken language in Ukraine, Moldova, Latvia, Turkmenistan and Estonia and, to a lesser extent, the other countries that were once constituent republics...

, Persian
Persian language
Persian is an Iranian language within the Indo-Iranian branch of the Indo-European languages. It is primarily spoken in Iran, Afghanistan, Tajikistan and countries which historically came under Persian influence...

, Kurdish (kurdî)
Kurdish language
Kurdish is a dialect continuum spoken by the Kurds in western Asia. It is part of the Iranian branch of the Indo-Iranian group of Indo-European languages....

, Italian
Italian language
Italian is a Romance language spoken mainly in Europe: Italy, Switzerland, San Marino, Vatican City, by minorities in Malta, Monaco, Croatia, Slovenia, France, Libya, Eritrea, and Somalia, and by immigrant communities in the Americas and Australia...

, Spanish
Spanish language
Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

, French
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

, Sanskrit, Marathi
Marathi language
Marathi is an Indo-Aryan language spoken by the Marathi people of western and central India. It is the official language of the state of Maharashtra. There are over 68 million fluent speakers worldwide. Marathi has the fourth largest number of native speakers in India and is the fifteenth most...

, Bengali
Bengali language
Bengali or Bangla is an eastern Indo-Aryan language. It is native to the region of eastern South Asia known as Bengal, which comprises present day Bangladesh, the Indian state of West Bengal, and parts of the Indian states of Tripura and Assam. It is written with the Bengali script...

 and Hindi are inflected to a greater or lesser extent. In general, older Indo-European languages such as Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

, Greek
Greek language
Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

, Old English, Old Norse
Old Norse
Old Norse is a North Germanic language that was spoken by inhabitants of Scandinavia and inhabitants of their overseas settlements during the Viking Age, until about 1300....

, and Sanskrit
Sanskrit
Sanskrit , is a historical Indo-Aryan language and the primary liturgical language of Hinduism, Jainism and Buddhism.Buddhism: besides Pali, see Buddhist Hybrid Sanskrit Today, it is listed as one of the 22 scheduled languages of India and is an official language of the state of Uttarakhand...

 are extensively inflected. Deflexion
Deflexion (linguistics)
Deflexion is a linguistic process related to inflectional languages. All members of the Indo-European language family belong to these kinds of languages and are subject to some degree of deflexional change. The process is typified by the degeneration of the inflectional structure of a language...

 has caused modern versions of some languages that were previously highly inflected to be much less so; an excellent example is Modern English, as compared to Old English. Most Slavic languages
Slavic languages
The Slavic languages , a group of closely related languages of the Slavic peoples and a subgroup of Indo-European languages, have speakers in most of Eastern Europe, in much of the Balkans, in parts of Central Europe, and in the northern part of Asia.-Branches:Scholars traditionally divide Slavic...

 are an exception to the general Indo-European deflexion trend, continuing to be highly inflected (in some cases acquiring additional inflectional complexity and grammatical gender
Grammatical gender
Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...

s, as in Czech
Czech declension
Czech declension describes the declension, or system of grammatically-determined modifications, in nouns, adjectives, pronouns and numerals in the Czech language. There is a system of 7 cases in Czech...

).

English

Old English
Old English language
Old English or Anglo-Saxon is an early form of the English language that was spoken and written by the Anglo-Saxons and their descendants in parts of what are now England and southeastern Scotland between at least the mid-5th century and the mid-12th century...

 was a moderately inflected language, using an extensive case system similar to that of modern Icelandic
Icelandic language
Icelandic is a North Germanic language, the main language of Iceland. Its closest relative is Faroese.Icelandic is an Indo-European language belonging to the North Germanic or Nordic branch of the Germanic languages. Historically, it was the westernmost of the Indo-European languages prior to the...

 or German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

. Middle and Modern English lost progressively more of the Old English inflectional system. Modern English is considered a weakly inflected language, since its nouns have only vestiges of inflection (plurals, the pronouns), and its regular verbs have only four forms: an inflected form for the past indicative and subjunctive (looked), an inflected form for the third-person-singular present indicative (looks), an inflected form for the present participle (looking), and an uninflected form for everything else (look). While the English possessive indicator 's (as in "Jane's book") is a remnant of the Old English genitive case
Genitive case
In grammar, genitive is the grammatical case that marks a noun as modifying another noun...

 suffix, it is now considered not a suffix but a clitic
Clitic
In morphology and syntax, a clitic is a morpheme that is grammatically independent, but phonologically dependent on another word or phrase. It is pronounced like an affix, but works at the phrase level...

.

Other Germanic languages

Old Norse was inflected, but modern Swedish
Swedish language
Swedish is a North Germanic language, spoken by approximately 10 million people, predominantly in Sweden and parts of Finland, especially along its coast and on the Åland islands. It is largely mutually intelligible with Norwegian and Danish...

, Norwegian
Norwegian language
Norwegian is a North Germanic language spoken primarily in Norway, where it is the official language. Together with Swedish and Danish, Norwegian forms a continuum of more or less mutually intelligible local and regional variants .These Scandinavian languages together with the Faroese language...

 and Danish
Danish language
Danish is a North Germanic language spoken by around six million people, principally in the country of Denmark. It is also spoken by 50,000 Germans of Danish ethnicity in the northern parts of Schleswig-Holstein, Germany, where it holds the status of minority language...

 have, like English, lost almost all overt inflection. Icelandic
Icelandic language
Icelandic is a North Germanic language, the main language of Iceland. Its closest relative is Faroese.Icelandic is an Indo-European language belonging to the North Germanic or Nordic branch of the Germanic languages. Historically, it was the westernmost of the Indo-European languages prior to the...

 preserves almost all of the inflections of Old Norse
Old Norse morphology
Old Norse has three categories of verb and two categories of noun . Conjugation and declension are carried out by a mix of inflection and two nonconcatenative morphological processes: umlaut, a backness-based alteration to the root vowel; and ablaut, a replacement of the root vowel, in...

 and has added its own. Modern German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 remains moderately inflected, retaining four noun cases, although the genitive started falling into disuse in all but formal writing in Early New High German. The case system of Dutch
Dutch language
Dutch is a West Germanic language and the native language of the majority of the population of the Netherlands, Belgium, and Suriname, the three member states of the Dutch Language Union. Most speakers live in the European Union, where it is a first language for about 23 million and a second...

, simpler than that of German, is also simplified in common usage. Afrikaans, recognized as a distinct language in its own right rather than a Dutch dialect only in the early 20th century, has lost almost all inflection.

Latin and the Romance languages

The Romance languages
Romance languages
The Romance languages are a branch of the Indo-European language family, more precisely of the Italic languages subfamily, comprising all the languages that descend from Vulgar Latin, the language of ancient Rome...

, such as Spanish
Spanish language
Spanish , also known as Castilian , is a Romance language in the Ibero-Romance group that evolved from several languages and dialects in central-northern Iberia around the 9th century and gradually spread with the expansion of the Kingdom of Castile into central and southern Iberia during the...

, Italian
Italian language
Italian is a Romance language spoken mainly in Europe: Italy, Switzerland, San Marino, Vatican City, by minorities in Malta, Monaco, Croatia, Slovenia, France, Libya, Eritrea, and Somalia, and by immigrant communities in the Americas and Australia...

, French
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

, Portuguese
Portuguese language
Portuguese is a Romance language that arose in the medieval Kingdom of Galicia, nowadays Galicia and Northern Portugal. The southern part of the Kingdom of Galicia became independent as the County of Portugal in 1095...

 and Romanian
Romanian language
Romanian Romanian Romanian (or Daco-Romanian; obsolete spellings Rumanian, Roumanian; self-designation: română, limba română ("the Romanian language") or românește (lit. "in Romanian") is a Romance language spoken by around 24 to 28 million people, primarily in Romania and Moldova...

, have more overt inflection than English, especially in verb conjugation
Grammatical conjugation
In linguistics, conjugation is the creation of derived forms of a verb from its principal parts by inflection . Conjugation may be affected by person, number, gender, tense, aspect, mood, voice, or other grammatical categories...

. Adjectives, nouns and articles are considerably less inflected than verbs, but they still have different forms according to number and grammatical gender.

Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

, the mother tongue of the Romance languages, was highly inflected; nouns and adjectives had different forms according to seven grammatical case
Grammatical case
In grammar, the case of a noun or pronoun is an inflectional form that indicates its grammatical function in a phrase, clause, or sentence. For example, a pronoun may play the role of subject , of direct object , or of possessor...

s (including five major ones) with five major patterns of declension, and three genders instead of the two found in most Romance tongues. There were four patterns of conjugation in six tenses, two moods and two voices, all overtly expressed by affixes (passive voice forms were periphrastic in three tenses).

Baltic languages

The Baltic languages
Baltic languages
The Baltic languages are a group of related languages belonging to the Balto-Slavic branch of the Indo-European language family and spoken mainly in areas extending east and southeast of the Baltic Sea in Northern Europe...

 are highly inflected. Nouns and adjectives are declined in up to seven overt cases. Additional cases are defined in various covert ways. For example, an inessive case
Inessive case
Inessive case is a locative grammatical case. This case carries the basic meaning of "in": for example, "in the house" is "talo·ssa" in Finnish, "maja·s" in Estonian, "etxea·n" in Basque, "nam·e" in Lithuanian and "ház·ban" in Hungarian.In Finnish the inessive case is typically formed by adding...

, an illative case
Illative case
Illative is, in the Finnish language, Estonian language and the Hungarian language, the third of the locative cases with the basic meaning of "into ". An example from Hungarian is "a házba"...

, an adessive case
Adessive case
In Uralic languages, such as Finnish, Estonian and Hungarian, the adessive case is the fourth of the locative cases with the basic meaning of "on". For example, Estonian laud and laual , Hungarian asztal and asztalnál...

 and allative case
Allative case
Allative case is a type of the locative cases used in several languages. The term allative is generally used for the lative case in the majority of languages which do not make finer distinctions.-Finnish language:In the Finnish language, the allative is the fifth of the locative cases, with the...

 are borrowed from Finnic. Latvian
Latvian language
Latvian is the official state language of Latvia. It is also sometimes referred to as Lettish. There are about 1.4 million native Latvian speakers in Latvia and about 150,000 abroad. The Latvian language has a relatively large number of non-native speakers, atypical for a small language...

 has only one overt locative case
Locative case
Locative is a grammatical case which indicates a location. It corresponds vaguely to the English prepositions "in", "on", "at", and "by"...

 but it syncretizes
Syncretism (linguistics)
In linguistics, syncretism is the identity of form of distinct morphological forms of a word. This phenomenon is typical of fusional languages....

 the above four cases to the locative marking them by differences in the use of prepositions. Lithuanian breaks them out of the genitive case
Genitive case
In grammar, genitive is the grammatical case that marks a noun as modifying another noun...

, accusative case
Accusative case
The accusative case of a noun is the grammatical case used to mark the direct object of a transitive verb. The same case is used in many languages for the objects of prepositions...

 and locative case
Locative case
Locative is a grammatical case which indicates a location. It corresponds vaguely to the English prepositions "in", "on", "at", and "by"...

 by using different postpositions.

Modern Baltic languages have also retained the old dual number. However, it is nowadays considered obsolete. For instance, in standard Lithuanian it is normal to say "dvi varnos (plural) – two crows" instead of "dvi varni (dual)". Adjectives, pronouns, and numerals are declined for number, gender, and case to agree with the noun they modify or for which they substitute. Baltic verbs are inflected for tense, mood, aspect, and voice. They agree with the subject in person and number (not in all forms in modern Latvian).

Slavic languages

All Slavic languages
Slavic languages
The Slavic languages , a group of closely related languages of the Slavic peoples and a subgroup of Indo-European languages, have speakers in most of Eastern Europe, in much of the Balkans, in parts of Central Europe, and in the northern part of Asia.-Branches:Scholars traditionally divide Slavic...

 make use of a high degree of inflection, typically having six or seven cases and three genders for nouns and adjectives. However, the overt case system has disappeared almost completely in modern Bulgarian
Bulgarian grammar
Bulgarian grammar is the grammar of the Bulgarian language. Bulgarian language is a South Slavic language, historically Bulgarian language evolved from the Old Bulgarian language, also known as Old Slavonic language which was the written norm for the Slavic languages in the Middle ages, and before...

 and Macedonian
Macedonian grammar
Macedonian grammar refers to the morphology and syntax of the Macedonian language, which is, in many respects, similar to the grammar of some other Balkan languages – especially Bulgarian and Serbian...

. Most verb tenses and moods are also formed by inflection (however, some are periphrastic, typically future and conditional). Inflection is also present in adjective comparation and word derivation.

Declensional endings depend on case (nominative, genitive, dative, accusative, locative, instrumental, vocative), number (singular, dual or plural), gender (masculine, feminine, neuter) and animacy (animate vs inanimate). Unusual in other language families, declension in most Slavic languages also depends on whether the word is a noun or an adjective. Slovene and Sorbian languages
Sorbian languages
The Sorbian languages are classified under the Slavic branch of the Indo-European languages. They are the native languages of the Sorbs, a Slavic minority in the Lusatia region of eastern Germany. Historically the language has also been known as Wendish or Lusatian. Their collective ISO 639-2 code...

 use a rare third number, (in addition to singular and plural numbers) known as dual
Dual (grammatical number)
Dual is a grammatical number that some languages use in addition to singular and plural. When a noun or pronoun appears in dual form, it is interpreted as referring to precisely two of the entities identified by the noun or pronoun...

 (in case of some words dual survived also in Polish and other Slavic languages). In addition, in some Slavic languages, such as Polish, word stems are frequently modified by the addition or absence of endings, resulting in consonant and vowel alternation
Apophony
In linguistics, apophony is the alternation of sounds within a word that indicates grammatical information .-Description:Apophony is...

.

Arabic (fusional)

Modern Standard Arabic (also called Literary Arabic) is a highly inflected language. It uses a complex system of pronouns and their respective prefixes and suffixes for verb, noun, adjective and possessive conjugation. In addition, the system known as ʾIʿrāb places vowel suffixes on each verb, noun, adjective, and adverb, according to its function within a sentence and its relation to surrounding words.

The following table is an example of present-tense case applications in Arabic:
Base Singular Plural Dual
Pronoun Possessive Suffix Verb Affixes Pronoun Possess. Suffix Verb Affixes Pronoun Possess. Suffix Verb Affixes
I
you (masc.)
you (fem.)
he
she
* note: a long tatwiil ( ـــــــــــــــــــــ ) indicates where the verb stem would be placed in order to conjugate it.

Arabic regional dialects
Varieties of Arabic
The Arabic language is a Semitic language characterized by a wide number of linguistic varieties within its five regional forms. The largest divisions occur between the spoken languages of different regions. The Arabic of North Africa, for example, is often incomprehensible to an Arabic speaker...

 (e.g. Moroccan
Morocco
Morocco , officially the Kingdom of Morocco , is a country located in North Africa. It has a population of more than 32 million and an area of 710,850 km², and also primarily administers the disputed region of the Western Sahara...

 Arabic, Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

ian Arabic, Gulf
Persian Gulf
The Persian Gulf, in Southwest Asia, is an extension of the Indian Ocean located between Iran and the Arabian Peninsula.The Persian Gulf was the focus of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers...

 Arabic), used for everyday communication, tend to have less inflection than the more formal Literary Arabic. For example, in Jordan
Jordan
Jordan , officially the Hashemite Kingdom of Jordan , Al-Mamlaka al-Urduniyya al-Hashemiyya) is a kingdom on the East Bank of the River Jordan. The country borders Saudi Arabia to the east and south-east, Iraq to the north-east, Syria to the north and the West Bank and Israel to the west, sharing...

ian Arabic, the second- and third-person feminine plurals ( /antunna/ and /hunna/) and their respective unique conjugations are lost and replaced by the masculine ( /antum/ and /hum/).

Uralic languages (agglutinative)

The Uralic languages
Uralic languages
The Uralic languages constitute a language family of some three dozen languages spoken by approximately 25 million people. The healthiest Uralic languages in terms of the number of native speakers are Hungarian, Finnish, Estonian, Mari and Udmurt...

 are agglutinative
Agglutinative language
An agglutinative language is a language that uses agglutination extensively: most words are formed by joining morphemes together. This term was introduced by Wilhelm von Humboldt in 1836 to classify languages from a morphological point of view...

, following from the agglutination in Proto-Uralic. The largest languages are Hungarian
Hungarian language
Hungarian is a Uralic language, part of the Ugric group. With some 14 million speakers, it is one of the most widely spoken non-Indo-European languages in Europe....

, Finnish
Finnish language
Finnish is the language spoken by the majority of the population in Finland Primarily for use by restaurant menus and by ethnic Finns outside Finland. It is one of the two official languages of Finland and an official minority language in Sweden. In Sweden, both standard Finnish and Meänkieli, a...

, and Estonian
Estonian language
Estonian is the official language of Estonia, spoken by about 1.1 million people in Estonia and tens of thousands in various émigré communities...

—all European Union
European Union
The European Union is an economic and political union of 27 independent member states which are located primarily in Europe. The EU traces its origins from the European Coal and Steel Community and the European Economic Community , formed by six countries in 1958...

 official languages. Uralic inflection is, or is developed from, affixing. Grammatical markers directly added to the word perform the same function as prepositions in English. Almost all words are inflected according to their roles in the sentence: verbs, nouns, pronouns, numerals, adjectives, and some particles.

Hungarian and Finnish, in particular, often simply concatenate suffixes. For example, Finnish talossanikinko "in my house, too?" consists of talo-ssa-ni-kin-ko. However, in the Finnic languages
Finnic languages
The term Finnic languages often means the Baltic-Finnic languages, an undisputed branch of the Uralic languages. However, it is also commonly used to mean the Finno-Permic languages, a hypothetical intermediate branch that includes Baltic Finnic, or the more disputed Finno-Volgaic languages....

 (Finnish, Estonian, Sami), there are processes which affect the root, particularly consonant gradation
Consonant gradation
Consonant gradation is a type of consonant mutation, in which consonants alternate between various "grades". It is found in some Uralic languages such as Finnish, Estonian, Northern Sámi, and the Samoyed language Nganasan. In addition, it has been reconstructed for Proto-Germanic, the parent...

. The original suffixes may disappear (and appear only by liaison), leaving behind the modification of the root. This process is extensively developed in Estonian and Sami, and makes them also inflected, not only agglutinating languages. The Estonian accusative case
Accusative case
The accusative case of a noun is the grammatical case used to mark the direct object of a transitive verb. The same case is used in many languages for the objects of prepositions...

, for example, is expressed by a modified root: maja →majja (historical form *majam).

Altaic languages (agglutinative)

The three language families often united as Altaic languages
Altaic languages
Altaic is a proposed language family that includes the Turkic, Mongolic, Tungusic, and Japonic language families and the Korean language isolate. These languages are spoken in a wide arc stretching from northeast Asia through Central Asia to Anatolia and eastern Europe...

Turkic
Turkic languages
The Turkic languages constitute a language family of at least thirty five languages, spoken by Turkic peoples across a vast area from Eastern Europe and the Mediterranean to Siberia and Western China, and are considered to be part of the proposed Altaic language family.Turkic languages are spoken...

, Mongolic, and Manchu-Tungus—are agglutinative. The largest languages are Turkish
Turkish language
Turkish is a language spoken as a native language by over 83 million people worldwide, making it the most commonly spoken of the Turkic languages. Its speakers are located predominantly in Turkey and Northern Cyprus with smaller groups in Iraq, Greece, Bulgaria, the Republic of Macedonia, Kosovo,...

, Azerbaijani
Azerbaijani language
Azerbaijani or Azeri or Torki is a language belonging to the Turkic language family, spoken in southwestern Asia by the Azerbaijani people, primarily in Azerbaijan and northwestern Iran...

 and Uzbek
Uzbek language
Uzbek is a Turkic language and the official language of Uzbekistan. It has about 25.5 million native speakers, and it is spoken by the Uzbeks in Uzbekistan and elsewhere in Central Asia...

—all Turkic languages. Altaic inflection is, or is developed from, affixing. Grammatical markers directly added to the word perform the same function as prepositions in English. Almost all words are inflected according to their roles in the sentence: verbs, nouns, pronouns, numerals, adjectives, and some particles.

Basque (agglutinative)

Basque
Basque language
Basque is the ancestral language of the Basque people, who inhabit the Basque Country, a region spanning an area in northeastern Spain and southwestern France. It is spoken by 25.7% of Basques in all territories...

, a language isolate
Language isolate
A language isolate, in the absolute sense, is a natural language with no demonstrable genealogical relationship with other languages; that is, one that has not been demonstrated to descend from an ancestor common with any other language. They are in effect language families consisting of a single...

, is an extremely inflected language, heavily inflecting both nouns and verbs. A Basque noun
Noun
In linguistics, a noun is a member of a large, open lexical category whose members can occur as the main word in the subject of a clause, the object of a verb, or the object of a preposition .Lexical categories are defined in terms of how their members combine with other kinds of...

 is inflected in 17 different ways for case, multiplied by 4 ways for its definiteness and number. These first 68 forms are further modified based on other parts of the sentence, which in turn are inflected for the noun again. It is estimated that at two levels of recursion
Recursion
Recursion is the process of repeating items in a self-similar way. For instance, when the surfaces of two mirrors are exactly parallel with each other the nested images that occur are a form of infinite recursion. The term has a variety of meanings specific to a variety of disciplines ranging from...

, a Basque noun may have 458,683 inflected forms. Verb forms are similarly complex, agreeing with the subject, the direct object and several other argument
Verb argument
In linguistics, a verb argument is a phrase that appears in a syntactic relationship with the verb in a clause. In English, for example, the two most important arguments are the subject and the direct object....

s.

Sino-Tibetan languages (isolating)

Some of the major Eastern Asian languages (such as the various Chinese language
Chinese language
The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...

s, Vietnamese
Vietnamese language
Vietnamese is the national and official language of Vietnam. It is the mother tongue of 86% of Vietnam's population, and of about three million overseas Vietnamese. It is also spoken as a second language by many ethnic minorities of Vietnam...

, and Thai
Thai language
Thai , also known as Central Thai and Siamese, is the national and official language of Thailand and the native language of the Thai people, Thailand's dominant ethnic group. Thai is a member of the Tai group of the Tai–Kadai language family. Historical linguists have been unable to definitively...

) are not overtly inflected, or show very little overt inflection, so they are considered analytic languages (also known as isolating languages).

Chinese

The Chinese family of languages, in general, does not possess overt inflectional morphology. Chinese words generally comprise one or two monosyllabic written characters, each of which can also stand alone as an unbound morpheme. Since morphemes are monosyllabic in the Chinese languages, Chinese is quite resistant to inflectional changes; instead, Chinese uses lexical means for achieving covert inflectional transparency.

While European languages more often use overt inflection to mark a word's function in a sentence, the Chinese languages tend to use word order as a grammatical marking system. Whereas in English the first-person singular nominative "I" changes to "me" when used in the accusative – that is, as the object of a verb – Chinese simply uses word order to mark such a distinction. An example from Mandarin: 我给了他一本书 (wǒ gěile tā yī běn shū) 'I gave him a book'. Here 我 (wǒ) means 'I' and 他 (tā) means 'him'. However, 'He gave me a book' would be: 他给了我一本书 (tā gěile wǒ yī běn shū). 我 (Wǒ) and 他 (Tā) simply change places in the sentence to indicate that their case has switched: there is no overt inflection in the form of the words. In classical Chinese, pronouns were overtly inflected as to case. However, these overt case forms are no longer used; most of the alternative pronouns are considered archaic in modern Mandarin Chinese. Classically, 我 (wǒ) was used solely as the first person accusative. 吾 (Wú) was generally used as the first person nominative.

Japanese (isolating/agglutinative)

Japanese
Japanese language
is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is a member of the Japonic language family, which has a number of proposed relationships with other languages, none of which has gained wide acceptance among historical linguists .Japanese is an...

 shows a high degree of overt inflection of verbs, less so of adjectives, and very little of nouns, but it is mostly strictly agglutinative
Agglutinative language
An agglutinative language is a language that uses agglutination extensively: most words are formed by joining morphemes together. This term was introduced by Wilhelm von Humboldt in 1836 to classify languages from a morphological point of view...

 and extremely regular. Some fusion of morphemes does take place (e.g. causative-passive -sare- as in ikasareru "is made to go", and non-past progressive -ter- as in tabeteru "is eating"), but this is rare. Formally, every noun phrase must be marked for case, but this is done by invariable particles (clitic
Clitic
In morphology and syntax, a clitic is a morpheme that is grammatically independent, but phonologically dependent on another word or phrase. It is pronounced like an affix, but works at the phrase level...

 postpositions). (Many grammarians consider Japanese particles to be separate words, and therefore not an inflection, while others consider agglutination a type of overt inflection, and therefore consider Japanese nouns as overtly inflected.)

Auxiliary languages

Auxiliary languages
International auxiliary language
An international auxiliary language or interlanguage is a language meant for communication between people from different nations who do not share a common native language...

, such as Esperanto, Ido, and Interlingua have comparatively simple inflectional systems.

Esperanto

In Esperanto
Esperanto
is the most widely spoken constructed international auxiliary language. Its name derives from Doktoro Esperanto , the pseudonym under which L. L. Zamenhof published the first book detailing Esperanto, the Unua Libro, in 1887...

, an agglutinative language, nouns and adjectives are inflected for case (nominative, accusative) and number (singular, plural), according to a simple paradigm without irregularities. Verbs are not inflected for person or number, but they are inflected for tense (past, present, future) and mood (indicative, infinitive, conditional, jussive). They also form active and passive participles, which may be past, present or future. All verbs are regular.

Ido

Ido
Ido
Ido is a constructed language created with the goal of becoming a universal second language for speakers of different linguistic backgrounds as a language easier to learn than ethnic languages...

 has a different form for each verbal tense (past, present, future, volitive and imperative) plus an infinitive, and both a present and past participle. There are though no verbal inflections for person or number, and all verbs are regular.

Nouns are marked for number (singular and plural), and the accusative case may be shown in certain situations, typically when the direct object of a sentence precedes its verb. On the other hand, adjectives are unmarked for gender, number or case (unless they stand on their own, without a noun, in which case they take on the same desinences as the missing noun would have taken). The definite article "la" ("the") remains unaltered regardless of gender or case, and also of number, except when there is no other word to show plurality. Pronouns are identical in all cases, though exceptionally the accusative case may be marked, as for nouns.

Interlingua

Interlingua
Interlingua
Interlingua is an international auxiliary language , developed between 1937 and 1951 by the International Auxiliary Language Association...

, in contrast with the Romance languages, has no irregular verb conjugations, and its verb forms are the same for all persons and numbers. It does, however, have compound verb tenses similar to those in the Romance, Germanic, and Slavic languages: ille ha vivite, "he has lived"; illa habeva vivite, "she had lived". Nouns are inflected by number, taking a plural -s, but rarely by gender: only when referring to a male or female being. Interlingua has no noun-adjective agreement by gender, number, or case. As a result, adjectives ordinarily have no inflections. They may take the plural form if they are being used in place of a noun: le povres, "the poor".

See also

  • Agreement (linguistics)
    Agreement (linguistics)
    In languages, agreement or concord is a form of cross-reference between different parts of a sentence or phrase. Agreement happens when a word changes form depending on the other words to which it relates....

  • Diction
    Diction
    Diction , in its original, primary meaning, refers to the writer's or the speaker's distinctive vocabulary choices and style of expression in a poem or story...

  • Intonation (linguistics)
    Intonation (linguistics)
    In linguistics, intonation is variation of pitch while speaking which is not used to distinguish words. It contrasts with tone, in which pitch variation does distinguish words. Intonation, rhythm, and stress are the three main elements of linguistic prosody...

  • Introflection
  • Lexeme
    Lexeme
    A lexeme is an abstract unit of morphological analysis in linguistics, that roughly corresponds to a set of forms taken by a single word. For example, in the English language, run, runs, ran and running are forms of the same lexeme, conventionally written as RUN...

  • Marker (linguistics)
    Marker (linguistics)
    In linguistics, a marker is a free or bound morpheme that indicates the grammatical function of the marked word, phrase, or sentence. In analytic languages and agglutinative languages, markers are generally easily distinguished. In fusional languages and polysynthetic languages, this is often not...

  • Morpheme
    Morpheme
    In linguistics, a morpheme is the smallest semantically meaningful unit in a language. The field of study dedicated to morphemes is called morphology. A morpheme is not identical to a word, and the principal difference between the two is that a morpheme may or may not stand alone, whereas a word,...

  • Nominal TAM
    Nominal TAM
    Nominal TAM is the indication of tense–aspect–mood by inflecting a noun, rather than a verb. In clausal nominal TAM, the noun indicates TAM information about the clause....

  • Periphrasis
    Periphrasis
    In linguistics, periphrasis is a device by which a grammatical category or grammatical relationship is expressed by a free morpheme , instead of being shown by inflection or derivation...

  • Suppletion
    Suppletion
    In linguistics and etymology, suppletion is traditionally understood as the use of one word as the inflected form of another word when the two words are not cognate. For those learning a language, suppletive forms will be seen as "irregular" or even "highly irregular". The term "suppletion" implies...

  • Synthetic language
    Synthetic language
    In linguistic typology, a synthetic language is a language with a high morpheme-per-word ratio, as opposed to a low morpheme-per-word ratio in what is described as an isolating language...

  • Tense–aspect–mood
  • Uninflected word
    Uninflected word
    In the context of linguistic morphology, an uninflected word is a word that has no morphological markers such as affixes, ablaut, consonant gradation, etc., indicating declension or conjugation...

  • Weak suppletion

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Lexicon of Linguistics articles

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