Derivation (linguistics)
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In linguistics
Linguistics
Linguistics is the scientific study of human language. Linguistics can be broadly broken into three categories or subfields of study: language form, language meaning, and language in context....

, derivation is the process of forming a new word on the basis of an existing word, e.g. happi-ness and un-happy from happy, or determination from determine. Derivation stands in contrast to the process of inflection
Inflection
In grammar, inflection or inflexion is the modification of a word to express different grammatical categories such as tense, grammatical mood, grammatical voice, aspect, person, number, gender and case...

, which uses another kind of affix in order to form grammatical variants of the same word, as with determine/determine-s/determin-ing/determin-ed. Generally speaking, inflection applies to all members of a part of speech (e.g., every English verb has a past-tense form), while derivation applies only to some members of a part of speech (e.g., the nominalizing suffix -ity can be used with the adjectives modern and dense, but not with open or strong).

A derivational suffix
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...

 usually applies to word
Word
In language, a word is the smallest free form that may be uttered in isolation with semantic or pragmatic content . This contrasts with a morpheme, which is the smallest unit of meaning but will not necessarily stand on its own...

s of one syntactic category
Syntactic category
A syntactic category is either a phrasal category, such as noun phrase or verb phrase, which can be decomposed into smaller syntactic categories, or a lexical category, such as noun or verb, which cannot be further decomposed....

 and changes them into words of another syntactic category
Syntax
In linguistics, syntax is the study of the principles and rules for constructing phrases and sentences in natural languages....

. For example, the 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...

 derivational suffix
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...

 -ly changes 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 into adverb
Adverb
An adverb is a part of speech that modifies verbs or any part of speech other than a noun . Adverbs can modify verbs, adjectives , clauses, sentences, and other adverbs....

s (slowslowly).

Examples of English derivational patterns and their suffixes:
  • 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....

    -to-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...

    : -ness (slowslowness)
  • adjective-to-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...

    : -ise (modernmodernise) in British English
    British English
    British English, or English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere...

     or -ize (archaicarchaicize) in American English
    American English
    American English is a set of dialects of the English language used mostly in the United States. Approximately two-thirds of the world's native speakers of English live in the United States....

     and Oxford spelling
    Oxford spelling
    Oxford spelling is the spelling used by Oxford University Press . It can be recognized for its use, as in American English, of the suffix -ize instead of -ise. For instance, organization, privatize and recognizable are used instead of organisation, privatise and recognisable...

  • adjective-to-adjective: -ish (redreddish)
  • adjective-to-adverb
    Adverb
    An adverb is a part of speech that modifies verbs or any part of speech other than a noun . Adverbs can modify verbs, adjectives , clauses, sentences, and other adverbs....

    : -ly (personalpersonally)
  • noun-to-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....

    : -al (recreationrecreational)
  • noun-to-verb: -fy (gloryglorify)
  • verb-to-adjective: -able (drinkdrinkable)
  • verb-to-noun (abstract): -ance (deliverdeliverance)
  • verb-to-noun (concrete): -er (writewriter)


Although derivational affixes do not necessarily alter the syntactic category
Syntactic category
A syntactic category is either a phrasal category, such as noun phrase or verb phrase, which can be decomposed into smaller syntactic categories, or a lexical category, such as noun or verb, which cannot be further decomposed....

, they do change the meaning of the base. In many cases, derivational affixes change both the syntactic category and the meaning: modernmodernize ("to make modern"). The change of meaning is sometimes predictable: Adjective + nessthe state of being (Adjective); (whitewhiteness).

A prefix (write re-write; lordover-lord) will rarely change syntactic category in English. The inflectional prefix un- applies to adjectives (healthyunhealthy)and some verbs (doundo), but rarely to nouns. A few exceptions are the derivational prefixes en- and be-. En- (em- before labials
Labial consonant
Labial consonants are consonants in which one or both lips are the active articulator. This precludes linguolabials, in which the tip of the tongue reaches for the posterior side of the upper lip and which are considered coronals...

) is usually used as a transitive marker on verbs, but can also be applied to adjectives and nouns to form transitive verbs: circle (verb) → encircle (verb); but rich (adj) → enrich (verb), large (adj) → enlarge (verb), rapture (noun) → enrapture (verb), slave (noun) → enslave (verb).

Note that derivational affixes are 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"...

s. In that respect, derivation differs from compounding
Compound (linguistics)
In linguistics, a compound is a lexeme that consists of more than one stem. Compounding or composition is the word formation that creates compound lexemes...

 by which free morphemes are combined (lawsuit, Latin professor). It also differs from inflection
Inflection
In grammar, inflection or inflexion is the modification of a word to express different grammatical categories such as tense, grammatical mood, grammatical voice, aspect, person, number, gender and case...

 in that inflection does not create new lexemes but new word forms (tabletables; openopened).

Derivation can occur without any change of form, for example telephone (noun) and to telephone. This is known as conversion
Conversion (linguistics)
In linguistics, conversion, also called zero derivation, is a kind of word formation; specifically, it is the creation of a word from an existing word without any change in form...

 or zero derivation.

See also

  • Inflection
    Inflection
    In grammar, inflection or inflexion is the modification of a word to express different grammatical categories such as tense, grammatical mood, grammatical voice, aspect, person, number, gender and case...

  • Nominalization
    Nominalization
    In linguistics, nominalization or nominalisation is the use of a verb, an adjective, or an adverb as the head of a noun phrase, with or without morphological transformation...

  • Word formation
    Word formation
    In linguistics, word formation is the creation of a new word. Word formation is sometimes contrasted with semantic change, which is a change in a single word's meaning...

  • collocation
    Collocation
    In corpus linguistics, collocation defines a sequence of words or terms that co-occur more often than would be expected by chance. In phraseology, collocation is a sub-type of phraseme. An example of a phraseological collocation is the expression strong tea...

  • creation
    Creation
    Creation may refer to:In religion and philosophy:*Creation myth, stories of the supernatural creation of the Earth and its inhabitants*Genesis creation narrative, The Biblical account of creationIn science and technology:...

  • word roots
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