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Proto-Indo-European language



 
 
The Proto-Indo-European language (PIE) is the unattested, reconstructed
Linguistic reconstruction

Linguistic reconstruction is the practice of establishing the features of the unattested ancestor of one or more given languages. There are two kinds of reconstruction....
 common ancestor of the Indo-European languages
Indo-European languages

The Indo-European languages are a Language family of several hundred related languages and dialects, including most major languages of Europe, the Iranian plateau , Central Asia and the Indian subcontinent ....
, spoken by the Proto-Indo-Europeans
Proto-Indo-Europeans

The Proto-Indo-Europeans were the speakers of the Proto-Indo-European language, and likely lived around 4000 BC, during the Copper Age and the Bronze Age, or possibly earlier, during the Neolithic or Paleolithic eras....
. The existence of such a language has been accepted by linguists for over a century, and there have been many attempts at reconstruction. Nevertheless, many disagreements and uncertainties remain.

When and where was PIE spoken?
There are several competing hypotheses about when and where PIE was spoken.






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The Proto-Indo-European language (PIE) is the unattested, reconstructed
Linguistic reconstruction

Linguistic reconstruction is the practice of establishing the features of the unattested ancestor of one or more given languages. There are two kinds of reconstruction....
 common ancestor of the Indo-European languages
Indo-European languages

The Indo-European languages are a Language family of several hundred related languages and dialects, including most major languages of Europe, the Iranian plateau , Central Asia and the Indian subcontinent ....
, spoken by the Proto-Indo-Europeans
Proto-Indo-Europeans

The Proto-Indo-Europeans were the speakers of the Proto-Indo-European language, and likely lived around 4000 BC, during the Copper Age and the Bronze Age, or possibly earlier, during the Neolithic or Paleolithic eras....
. The existence of such a language has been accepted by linguists for over a century, and there have been many attempts at reconstruction. Nevertheless, many disagreements and uncertainties remain.

Discovery and reconstruction


When and where was PIE spoken?


There are several competing hypotheses about when and where PIE was spoken. The Kurgan hypothesis
Kurgan hypothesis

The Kurgan hypothesis is one of the proposals about early Indo-European origins, which postulates that the people of an archaeological "Kurgan culture" in the Pontic steppe were the most likely speakers of the Proto-Indo-European language....
 is "the single most popular" model, postulating that the Kurgan culture of the Pontic steppe were the hypothesized speakers of the reconstructed Proto-Indo-European language. However, alternative theories such as the Anatolian urheimat
Anatolian hypothesis

The Anatolian hypothesis is also called Renfrew's Neolithic Discontinuity Theory ; it proposes that the dispersal of Proto-Indo-Europeans originated in Neolithic Anatolia....
 have also gained acceptance.

The satemization process that caused the separation between Centum and Satem
Centum-Satem isogloss

The Centum-Satem division is an isogloss of the Indo-European languages family, related to the evolution of the three dorsal consonant rows reconstructed for Proto-Indo-European language, * , * , and *; ....
 languages probably started as early as the fourth millennium BC and the only thing known for certain is that the proto language must have been differentiated into unconnected daughter dialects by the late 3rd millennium BC.

Mainstream linguistic estimates of the time between PIE and the earliest attested texts (ca. nineteenth century BC; see Kültepe texts
Kültepe

K?ltepe is a modern village near the ancient city of Kane? in central eastern Anatolia. The nearest modern city is Kayseri, about 20 km southwest....
) range around 1,500 to 2,500 years, with extreme proposals diverging up to another 100% on either side. Other than the aforementioned, predominant Kurgan hypothesis, proposed models include:
  • the 4th millennium BC (excluding the Anatolian branch) in Armenia
    Armenia

    Armenia , officially the Republic of Armenia , is a landlocked mountainous country in South Caucasus between the Black Sea and the Caspian Sea....
    , according to the Armenian hypothesis
    Armenian hypothesis

    The Armenian hypothesis of the Proto-Indo-European language Urheimat, based on the Glottalic theory suggests that the Proto-Indo-European language was spoken during the 4th millennium BC in the Armenian Highland....
     (proposed in the context of Glottalic theory
    Glottalic theory

    The glottalic theory holds that Proto-Indo-European language had Ejective consonant stop consonant, , but not the breathy voice ones, , of traditional Proto-Indo-European reconstructions....
    );
  • the 5th millennium BC (4th
    4th millennium BC

    The 4th millennium BC saw major changes in human culture. It marks the beginning of the Bronze Age and of writing.The city states of Sumer and the kingdom of Ancient Egypt are established and grow to prominence....
     excluding the Anatolian branch) in the Pontic-Caspian steppe
    Pontic-Caspian steppe

    The term Pontic-Caspian steppe summarizes the vast steppelands stretching from north of the Black Sea as far as the east of the Caspian Sea, from central Ukraine across the Southern Federal District and Volga Federal District Federal Districts of Russia to western Kazakhstan, forming part of the larger Eurasian steppe, adjacent to the Kaz...
    , according to the popular Kurgan hypothesis
    Kurgan hypothesis

    The Kurgan hypothesis is one of the proposals about early Indo-European origins, which postulates that the people of an archaeological "Kurgan culture" in the Pontic steppe were the most likely speakers of the Proto-Indo-European language....
    ;
  • the 6th millennium BC or later in Northern Europe according to Lothar Kilian's and, especially, Marek Zvelebil's models of a broader homeland;
  • the 6th millennium BC in India
    Indian subcontinent

    The Indian subcontinent is a large section of the Asian continent consisting of the land lying substantially on the Indian Plate. The subcontinent includes parts of various countries in South Asia, including those on the continental crust , an Island#Continental islands country on the continental shelf , and an Island#Oceanic islands countr...
    , according to Koenraad Elst
    Koenraad Elst

    Koenraad Elst is a Demographics of Belgium writer and orientalist .He was an editor of the New Right Flemish nationalist journal TeKoS from 1992 to 1995, focusing on criticism of Islam, various other conservative and Flemish separatist publications such as Nucleus, t Pallieterke, Secessie and The Brussels Journal....
    's Out of India model
    Out of India theory

    The Out of India theory is the proposition that the Indo-European language family Indo-European homeland in the Indian subcontinent and spread to the remainder of the Indo-European region through a series of migrations....
    ;
  • the 7th millennium BC in Anatolia
    Anatolia

    Anatolia or Asia Minor is a region of Western Asia, comprising most of the modern Republic of Turkey. It is a geographic region bounded by the Black Sea to the north, the Caucasus to the northeast, the Aegean Sea to the west, the Mediterranean Sea to the south, and the Iranian plateau to the east and southeast....
     (the 5th
    5th millennium BC

    The 5th millennium BC saw the spread of agriculture from the Near East throughout southern and central Europe.Urban cultures in Mesopotamia and Anatolia flourish, developing the wheel....
    , in the Balkans
    Balkans

    The Balkans is the historical name of a geographic subregion of southeastern Europe. The region takes its name from the Balkan Mountains, which run through the centre of Bulgaria into eastern Serbia....
    , excluding the Anatolian branch), according to Colin Renfrew's Anatolian hypothesis
    Anatolian hypothesis

    The Anatolian hypothesis is also called Renfrew's Neolithic Discontinuity Theory ; it proposes that the dispersal of Proto-Indo-Europeans originated in Neolithic Anatolia....
    ;
  • the 7th millennium BC in Anatolia
    Anatolia

    Anatolia or Asia Minor is a region of Western Asia, comprising most of the modern Republic of Turkey. It is a geographic region bounded by the Black Sea to the north, the Caucasus to the northeast, the Aegean Sea to the west, the Mediterranean Sea to the south, and the Iranian plateau to the east and southeast....
     (6th
    6th millennium BC

    During the 6th millennium BC, agriculture spreads from the Balkans to Italy and Eastern Europe and from Mesopotamia to Egypt. World population is essentially stable at ca....
     excluding the Anatolian branch), according to a 2003 glottochronological study;
  • before the 10th millennium BC, in the Paleolithic Continuity Theory
    Paleolithic Continuity Theory

    The Paleolithic Continuity Theory is a hypothesis suggesting that the hypothetical Proto-Indo-European language can be traced back to the Paleolithic era,...
    .


History

The classical phase of Indo-European comparative linguistics
Comparative linguistics

Comparative linguistics is a branch of historical linguistics that is concerned with comparing languages in order to establish their history relatedness....
 leads from Franz Bopp
Franz Bopp

Franz Bopp was a Germany linguistics known for extensive comparative work on Indo-European languages....
's Comparative Grammar (1833) to August Schleicher's 1861 Compendium and up to Karl Brugmann
Karl Brugmann

Karl Brugmann was a German linguist. He is a towering figure in Indo-European linguistics.During most of his professional life , Brugmann was professor of Sanskrit and comparative linguistics at the University of Leipzig....
's Grundriss published from the 1880s. Brugmann's junggrammatische re-evaluation of the field and Ferdinand de Saussure
Ferdinand de Saussure

Ferdinand de Saussure was a Switzerland linguistics whose ideas laid a foundation for many significant developments in linguistics in the 20th century....
's development of the laryngeal theory
Laryngeal theory

The laryngeal theory is a generally accepted theory of historical linguistics which proposes the existence of a set of three consonant sounds known as "laryngeals" that appear in most current reconstructions of the Proto-Indo-European language ....
 may be considered the beginning of "contemporary" Indo-European studies.

PIE as described in the early 1900s is still generally accepted today; subsequent work is largely refinement and systematization, as well as the incorporation of new information, notably the Anatolian
Anatolian languages

The Anatolian languages are a group of extinct Indo-European languages languages, which were spoken in Asia Minor, the best attested of them being the Hittite language....
 and Tocharian
Tocharian languages

Tocharian or Tokharian is one of the branches of the Indo-European language family. The name of the language is taken from people known to the Greeks as the Tocharians ....
 branches unknown in the 19th century.

Notably, the laryngeal theory
Laryngeal theory

The laryngeal theory is a generally accepted theory of historical linguistics which proposes the existence of a set of three consonant sounds known as "laryngeals" that appear in most current reconstructions of the Proto-Indo-European language ....
, in its early forms discussed since the 1880s, became mainstream after Jerzy Kurylowicz
Jerzy Kurylowicz

Jerzy Kurylowicz was a Poland linguist who studied Indo-European languages. He was the brother of Wlodzimierz Kurylowicz....
's 1927 discovery of the survival of at least some of these hypothetical phonemes in Anatolian. Julius Pokorny
Julius Pokorny

Julius Pokorny was a scholar of the Celtic languages, particularly Irish language, and a supporter of Irish nationalism. He was born in Prague, Austria?Hungary and studied at the University of Vienna, where he also taught from 1913 to 1920....
's Indogermanisches etymologisches Wörterbuch
Indogermanisches Etymologisches Wörterbuch

The Indogermanisches etymologisches W?rterbuch was published in 1959 by the Austrian-German comparative linguist and Celtic languages expert Julius Pokorny....
 (1959) gave an overview of the lexical knowledge accumulated until the early 20th century, but neglected contemporary trends of morphology and phonology, and largely ignored Anatolian and Tocharian.

The generation of Indo-Europeanists active in the last third of the 20th century (such as Calvert Watkins
Calvert Watkins

Calvert Watkins is a professor Emeritus of linguistics and the classics at Harvard University and professor-in-residence at UCLA.His doctoral dissertation, Indo-European Origins of the Celtic Verb I....
, Jochem Schindler
Jochem Schindler

Jochem Schindler was an Austrian Indo-Europeanist. In spite of his comparatively thin bibliography, he made important contributions, in particular to the theory of PIE nominal inflection and Indo-European ablaut....
 and Helmut Rix
Helmut Rix

Helmut Rix was a Germany linguist and professor of the Sprachwissenschaftliches Seminar of Albert-Ludwigs-Universit?t, Freiburg, Germany.He is best known for his research into Indo-European studies and Etruscan language languages....
) developed a better understanding of morphology and, in the wake of Kurylowicz's 1956 Apophonie, understanding of the ablaut
Indo-European ablaut

In linguistics, the term ablaut designates a system of vowel gradation in Proto-Indo-European language and its far-reaching consequences in all of the modern Indo-European languages....
. From the 1960s, knowledge of Anatolian became certain enough to establish its relationship to PIE; see also Indo-Hittite
Indo-Hittite

In Indo-European linguistics, the term Indo-Hittite refers to Edgar H. Sturtevant's 1926 hypothesis that the Anatolian languages may have split off the Proto-Indo-European language considerably earlier than the separation of the remaining Indo-European languages....
.

Method

There is no direct evidence of PIE, because it was never written
Written language

A written language is the representation of a language by means of a writing system. Written language is an invention in that it must be taught to children, who will instinctively learn or create spoken language or sign language languages....
. All PIE sounds and words are reconstructed from later Indo-European languages using the comparative method
Comparative method

In linguistics, the comparative method is a technique for studying the development of languages. It requires the use of two or more languages. It is opposed to the method of internal reconstruction, which studies the internal development of a single language over time....
 and the method of internal reconstruction
Internal reconstruction

Internal reconstruction is a method of recovering information about a language's past from the characteristics of the language at a later date. Whereas the comparative method compares variations between languages ? such as in sets of cognates ? under the assumption that they descend from a single proto-language, internal reconstruction compar...
. An asterisk
Asterisk

An 'asterisk' is a typographical symbol or glyph. It is so called because it resembles a conventional image of a star. Computer scientists and mathematicians often pronounce it as star ....
 is used to mark reconstructed PIE words, such as * 'water
Water

Water is a common chemical substance that is essential for the survival of all known forms of life. In typical usage, water refers only to its liquid form or States of matter, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam....
', * 'dog
Dog

The dog is a domesticated subspecies of the Gray Wolf, a member of the Canidae family of the order Carnivora. The term is used for both feral and pet varieties....
' (English hound), or * 'three (masculine)'. Many of the words in the modern Indo-European languages seem to have derived from such "protowords" via regular sound change
Sound change

Sound change includes any processes of language change that affect pronunciation or sound system structures . Sound change can consist of the replacement of one phoneme by another, the complete loss of the affected sound, or even the introduction of a new sound in a place where there previously was none....
s (e.g., Grimm's law
Grimm's law

Grimm's law named for Jacob Grimm, is a set of statements describing the inherited Proto-Indo-European language stops as they developed in Proto-Germanic in the 1st millennium BC....
).

As the Proto-Indo-European language broke up, its sound system diverged as well, according to various sound laws in the daughter languages. Notable among these are Grimm's law
Grimm's law

Grimm's law named for Jacob Grimm, is a set of statements describing the inherited Proto-Indo-European language stops as they developed in Proto-Germanic in the 1st millennium BC....
 and Verner's law
Verner's law

Verner's law, stated by Karl Verner in 1875, describes a historical sound change in the Proto-Germanic language whereby voiceless fricatives *f, *?, *s, *h , when immediately following an unstressed syllable in the same word, underwent voicing and became respectively the fricatives *b, *d, *z, *g ....
 in Proto-Germanic
Proto-Germanic language

Proto-Germanic, or Common Germanic, as it is sometimes known, is the hypothetical common ancestor of all the Germanic languages such as modern English language, Dutch language, German language, Danish language, Norwegian language, Icelandic language, Faroese language, and Swedish language....
, loss of prevocalic *p- in Proto-Celtic
Proto-Celtic language

The Proto-Celtic language, also called Common Celtic, is the putative ancestor of all the known Celtic languages. Its lexis can be confidently reconstructed on the basis of the comparative method of historical linguistics....
, reduction to h of prevocalic *s- in Proto-Greek
Proto-Greek language

The Proto-Greek language is the assumed last common ancestor of all known varieties of Greek language, including Mycenaean Greek language, the ancient Greek ancient Greek dialects , and ultimately Koine Greek, Medieval Greek and modern Greek....
, Brugmann's law
Brugmann's law

Brugmann's law, named for Karl Brugmann, states that Proto-Indo-European language in non-final syllables became *a in open syllables in Indo-Iranian....
 and Bartholomae's law
Bartholomae's law

Bartholomae's law is an early Indo-European languages sound law affecting the Proto-Indo-Iranian family, though thanks to the falling together of plain voiced and voiced aspirated stops in Iranian, its impact on the phonological history of that subgroup is unclear....
 in Proto-Indo-Iranian, Grassmann's law
Grassmann's Law

Grassmann's law, named after its discoverer Hermann Grassmann, is a dissimilatory phonological process in Ancient Greek and Sanskrit which states that if an Aspiration d consonant is followed by another aspirated consonant in the next syllable, the first one loses the aspiration....
 independently in both Proto-Greek and Proto-Indo-Iranian, and Winter's law
Winter's law

Winter's law, named after Werner Winter who postulated it in 1978, is a sound law operating on Balto-Slavic language short vowels */e/, */o/, */a/ */i/ and */u/, according to which they lengthen before unaspirated voiced stops in a closed syllable, and that syllable gains rising, acute accent....
 and Hirt's law
Hirt's law

Hirt's law, named after Hermann Hirt who postulated it originally in 1895, is a Proto-Balto-Slavic language sound law which states in its modern form that the inherited Proto-Indo-European stress would retract to non-ablauting pretonic vowel or a syllabic sonorant if it was followed by a consonantal laryngeal that closed the preceding syllab...
 in Balto-Slavic
Balto-Slavic languages

The Balto-Slavic language group consists of the Baltic languages and Slavic languages, belonging to the Indo-European languages of languages. Having experienced a period of common development, Baltic and Slavic languages share several linguistic traits not found in any other Indo-European branch, which points to their close genetic relationsh...
.

Relationships to other language families


Proposed genetic connections

Many higher-level relationships between Proto-Indo-European and other language families have been proposed, but these hypothesized connections are highly controversial. A proposal often considered to be the most plausible of these is that of an Indo-Uralic
Indo-Uralic languages

Indo-Uralic is a hypothetical language family consisting of Indo-European languages and Uralic languages.A genetic relationship between Indo-European and Uralic was first proposed by the Danish linguist Vilhelm Thomsen in 1869 but was received with little enthusiasm....
 family, encompassing PIE and Uralic
Uralic languages

The Uralic languages constitute a language families of 39 languages spoken by approximately 25 million people. The healthiest Uralic languages in terms of the number of native speakers are Hungarian language, Finnish language, Estonian language, Mari language and Udmurt language....
. The evidence usually cited in favor of this consists in a number of striking morphological and lexical resemblances. Opponents attribute the lexical resemblances to borrowing from Indo-European into Uralic. Frederik Kortlandt
Frederik Kortlandt

Frederik Herman Henri Kortlandt is a professor of descriptive and comparative linguistics at Leiden University. He is an expert on Baltic languages and Slavic languages, the Indo-European languages in general, and Proto-Indo-European language, though he has also published studies of languages in many other language families....
, while advocating a connection, concedes that "the gap between Uralic and Indo-European is huge", while Lyle Campbell
Lyle Campbell

Lyle Richard Campbell is a linguist and leading expert on American Indian languages?especially those of Mesoamerica?and on historical linguistics in general....
, an authority on Uralic, denies any relationship exists.

Other proposals, further back in time (and proportionately less accepted), link Indo-European and Uralic with Altaic
Altaic languages

Altaic is a disputed language family that is generally held by its proponents to include the Turkic languages, Mongolic languages, Tungusic languages, Korean language, and Japonic languages language families ....
 and the other language families of northern Eurasia, namely Yukaghir
Yukaghir languages

The 'Yukaghir languages' are a small family of two closely related languages spoken in the Russian Far East by the Yukaghir, an indigenous people in Eastern Siberia, living in the basin of the Kolyma River....
, Korean
Korean language

Korean is the official language of North Korea and South Korea. It is also one of the two official languages in the Yanbian Korean Autonomous Prefecture in People's Republic of China....
, Japanese
Japanese language

IPA: [n?iho?go] is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is related to the Ryukyuan languages....
, Chukotko-Kamchatkan
Chukotko-Kamchatkan languages

The Chukotko-Kamchatkan languages are a Language families and languages of northeastern Siberia. The family is also known as Chukchi-Kamchatkan....
, Nivkh
Nivkh language

Nivkh or Gilyak is a language spoken in Outer Manchuria, in the basin of the Amgun River , along the lower reaches of the Amur itself, and on the northern half of Sakhalin....
, Ainu
Ainu language

Hokkaido Ainu is an Ainu languages spoken by members of the Ainu people ethnic group on the northern Japanese island of Hokkaido.Until the twentieth century, Ainu languages were also spoken throughout the southern half of the island of Sakhalin and by small numbers of people in the Kuril Islands....
, and Eskimo-Aleut
Eskimo-Aleut languages

Eskimo-Aleut is a language family native to Alaska, the Northern Canada, Nunavik, Nunatsiavut, Greenland, and the Chukchi Peninsula on the eastern tip of Siberia....
, but excluding Yeniseian
Yeniseian languages

The Yeniseian language family is spoken in central Siberia....
 (the most comprehensive such proposal is Joseph Greenberg
Joseph Greenberg

Joseph Harold Greenberg was a prominent and controversial American linguistics, principally known for his work in two areas, linguistic typology and the genetic relationship of languages....
's Eurasiatic
Eurasiatic languages

Eurasiatic is a hypothetical language family proposed by Joseph Greenberg that groups all of the language families historically spoken in northern Eurasia into a single higher-order family, with the sole exception of the Yeniseian languages, spoken in part of Siberia, but including the Eskimo-Aleut languages, spoken in northernmost North Amer...
), or link Indo-European, Uralic, and Altaic to Afro-Asiatic
Afro-Asiatic languages

The Afro-Asiatic languages constitute a language family with about 375 living languages and more than 300 million speakers spread throughout North Africa, the Horn of Africa, and Southwest Asia ....
 and Dravidian
Dravidian languages

The Dravidian Language families and languages includes approximately 73 languages and are mainly spoken in South India and northeastern Sri Lanka Tamils , as well as certain areas in Pakistan, Nepal, Bangladesh, and eastern and central India, as well as in parts of Afghanistan, Iran, and overseas in other countries such as Malaysia and Si...
 (the traditional form of the Nostratic
Nostratic languages

The Nostratic languages constitute a proposed language family that includes many of the indigenous language families of Europe, Asia, Africa, and North America....
 hypothesis), and ultimately to a single Proto-Human family.

A more rarely mentioned proposal associates Indo-European with the Northwest Caucasian languages
Northwest Caucasian languages

The Northwest Caucasian languages, also called Pontic, Circassian, or Abkhaz-Adyghe, are a group of languages spoken in the Caucasus region, chiefly in Russia , Georgia , and Turkey, with smaller communities scattered throughout the Middle East....
 in a family called Proto-Pontic
Proto-Pontic language

Proto-Pontic is the postulated proto-language for a Pontic language family or macrofamily. Each of these terms may refer to a number of different linguistic entities....
.

Etruscan
Etruscan language

The Etruscan language was spoken and written by the Etruscan civilization in the ancient region of Etruria and in parts of Lombardy, Veneto, and Emilia-Romagna , in Italy....
 shows some similarities to Indo-European. There is no consensus on whether these are due to a genetic relationship, borrowing, chance and sound symbolism, or some combination of these.

Proposed areal connections

The existence of certain PIE typological features in Northwest Caucasian languages
Northwest Caucasian languages

The Northwest Caucasian languages, also called Pontic, Circassian, or Abkhaz-Adyghe, are a group of languages spoken in the Caucasus region, chiefly in Russia , Georgia , and Turkey, with smaller communities scattered throughout the Middle East....
 may hint at an early Sprachbund
Sprachbund

A Sprachbund , from the German language word for ?language union?, also known as a linguistic area, convergence area, diffusion area or language crossroads, is a group of languages that have become similar in some way because of geographical proximity and language contact....
 or substratum that reached geographically to the PIE homelands. This same type of languages, featuring complex verbs and of which the current Northwest Caucasian languages might have been the sole survivors, was cited by Peter Schrijver to indicate a local lexical and typological reminiscence in western Europe pointing to a possible Neolithic substratum
Neolithic creolisation hypothesis

The Neolithic creolisation hypothesis, first put forward by Marek Zvelebil in 1995, contributes to the Proto-Indo-European Urheimat issue and proposes a cultural melting pot in the Neolithic of Northern Europe of foreign Neolithic farmers and indigenous Mesolithic hunter-gatherer communities, that resulted into the genesis of the Indo-Europe...
.

Phonology


Consonants

Labial
Labial consonant

Labials are consonants articulated either with both lips or with the lower lip and the upper teeth . English is a bilabial nasal consonant sonorant, and are bilabial stop consonant , and are labiodental fricative consonant....
Coronal
Coronal consonant

Coronal consonants are articulated with the flexible front part of the tongue. Only the coronal consonants can be divided into apical consonant , laminal consonant , domed consonant , or sub-apical consonant , as well as a few rarer orientations, because only the front of the tongue has such dexterity....
Dorsal
Dorsal consonant

Dorsal consonants are articulated with the mid body of the tongue . They contrast with coronal consonants articulated with the flexible front of the tongue, and radical consonants articulated with the root of the tongue....
Laryngeal
Laryngeal theory

The laryngeal theory is a generally accepted theory of historical linguistics which proposes the existence of a set of three consonant sounds known as "laryngeals" that appear in most current reconstructions of the Proto-Indo-European language ....
palatalplainlabial
Nasal
Nasal consonant

A nasal consonant is produced with a lowered soft palate in the mouth, allowing air to escape freely through the nose. The oral cavity still acts as a resonance chamber for the sound, but the air does not escape through the mouth as it is blocked by the tongue....
    
Plosive voiceless 
voiced 
aspirated
Aspiration (phonetics)

In phonetics, aspiration is the strong burst of Earth's atmosphere that accompanies either the release or, in the case of preaspiration, the closure of some obstruents....
 
Fricative
Fricative consonant

Fricatives are consonants produced by forcing air through a narrow channel made by placing two Place of articulation close together. These may be the lower lip against the upper teeth, in the case of ; the back of the tongue against the soft palate, in the case of German language , the final consonant of Bach; or the side of the tongue ag...
    
Liquid
Liquid consonant

Liquid consonants, or liquids, are trill consonants, tap consonant, or approximant consonants that are not classified as semivowels because they do not correspond phonetically to specific vowels ....
    
Semivowel
Semivowel

Semivowels, also known as glides or non-syllabic vowels, are vowels that form diphthongs with full syllable vowels. That is, they are vowel-like sounds that do not form the syllable nucleus of a syllable or mora ; they are not the most prominence part of the syllable....
    
Alternative notations: The aspirated plosives are sometimes written as ; for the palatals, are often used; and can replace .

The pronunciation of the laryngeals
Laryngeal theory

The laryngeal theory is a generally accepted theory of historical linguistics which proposes the existence of a set of three consonant sounds known as "laryngeals" that appear in most current reconstructions of the Proto-Indo-European language ....
 is disputed, at least *h1 might not have been a fricative.

Vowels

  • Short vowel
    Vowel

    In phonetics, a vowel is a sound in spoken language, such as English ah! or oh! , pronounced with an open vocal tract so that there is no build-up of air pressure at any point above the glottis....
    s
    : , (and possibly ).
  • Long vowels: , (and possibly ). Sometimes a colon (:) is employed instead of the macron sign to indicate vowel length
    Vowel length

    In linguistics, vowel length is the perceived length of a vowel sound. Often the chroneme, or the "longness", acts like a consonant, and may etymologically be one such as in Australian English....
     (*a:, *e:, *o:).
  • Diphthong
    Diphthong

    In phonetics, a diphthong, or , is a contour vowel?that is, a unitary vowel that changes vowel quality during its pronunciation, or "glides", with a glissando of the tongue from one articulation to another, as in the English words eye, boy, and cow. This contrasts with "pure" vowels, or monophthongs, where the tongue is held s...
    s
    : . Diphthongs are sometimes understood as combinations of a vowel plus a semivowel, e. g. *ey or *ei? instead of *ei.
  • Vocalic allophones of laryngeals, nasals, liquids and semivowels: .
  • Long variants of these vocalic allophones may have appeared already in the proto-language by compensatory lengthening
    Compensatory lengthening

    Compensatory lengthening in phonology and historical linguistics is the lengthening of a vowel sound that happens upon the loss of a following consonant, usually in the syllable coda....
     (for example of a vowel plus a laryngeal): .


It is often suggested that all and were earlier derived from an preceded or followed by , but Mayrhofer has argued that PIE did in fact have and phonemes independent of .

Morphology


Root


PIE was an inflected language, in which the grammatical relationships between words were signaled through inflectional morphemes (usually endings). The roots
Root (linguistics)

The root is the primary lexicology unit of a word, which carries the most significant aspects of semantics content and cannot be reduced into smaller constituents....
 of PIE are basic morpheme
Morpheme

In morpheme-based morphology, a is the smallest linguistic unit that has semantics Meaning .In spoken language, morphemes are composed of phonemes , and in written language morphemes are composed of graphemes ....
s carrying a lexical meaning. By addition of suffix
Suffix

In grammar, 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 grammatical conjugation of verbs....
es, they form stems, and by addition of desinences (usually endings), these form grammatically inflected word
Word

A word is a unit of language that represents a concept which can be expressively communication with Meaning . A word consists of one or more morphemes which are linked more or less tightly together, and has a phonetic value....
s (noun
Noun

In linguistics, a noun is a member of a large, open class 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....
s or verb
Verb

In syntax, a verb is a word that usually denotes an action , an occurrence , or a state of being . Depending on the language, a verb may vary in form according to many factors, possibly including its grammatical tense, grammatical aspect, grammatical mood and grammatical voice....
s). PIE roots are understood to be predominantly monosyllabic with a basic shape CvC(C). This basic root shape is often altered by ablaut
Indo-European ablaut

In linguistics, the term ablaut designates a system of vowel gradation in Proto-Indo-European language and its far-reaching consequences in all of the modern Indo-European languages....
. Roots which appear to be vowel initial are believed by many scholars to have originally begun with a set of consonants, later lost in all but the Anatolian
Anatolian languages

The Anatolian languages are a group of extinct Indo-European languages languages, which were spoken in Asia Minor, the best attested of them being the Hittite language....
 branch, called laryngeals (usually indicated , and often specified with a subscript number ). Thus a verb form such as the one reflected in Latin , Greek (ágousi), Sanskrit would be reconstructed as , with the element constituting the root per se.

Ablaut


One of the distinctive aspects of PIE was its ablaut sequence that contrasted the vowel phonemes / Ř [no vowel] within the same root. Ablaut is a form of vowel variation which changed between these three forms perhaps depending on the adjacent sounds and placement of stress in the word. These changes are echoed in modern Indo-European languages where they have come to reflect grammatical categories. These ablaut grades are usually referred to as: e-grade and o-grade, sometimes collectively termed full grade; zero-grade (no vowel, Ř); and lengthened grade ( or ). Modern English sing, sang, sung is an example of such an ablaut set and reflects a pre-Proto-Germanic sequence *sengw-, *songw-, *sngw-. Some scholars believe that the inflectional affixes of Indo European reflect ablaut variants, usually zero-grade
Indo-European ablaut

In linguistics, the term ablaut designates a system of vowel gradation in Proto-Indo-European language and its far-reaching consequences in all of the modern Indo-European languages....
, of older PIE roots. Often the zero-grade appears where the word's accent has shifted from the root to one of the affixes. Thus the alternation found in Latin est, sunt reflects PIE .

Noun


Proto-Indo-European
Proto-Indo-European language

The Proto-Indo-European language is the unattested, linguistic reconstruction common ancestor of the Indo-European languages, spoken by the Proto-Indo-Europeans....
 nouns
were declined for eight or nine cases (nominative, accusative
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....
, genitive, dative
Dative case

The dative case is a grammatical case generally used to indicate the noun to whom something is given. For example, in "John gave a book to Mary"....
, instrumental
Instrumental case

The instrumental case is a grammatical case used to indicate that a noun is the instrument or means by or with which the subject achieves or accomplishes an action....
, ablative, locative, vocative, and possibly a directive or allative). There were three genders: masculine, feminine, and neuter.

There are two major types of declension, thematic and athematic. Thematic nominal stems are formed with a suffix (in vocative ) and the stem does not undergo ablaut
Indo-European ablaut

In linguistics, the term ablaut designates a system of vowel gradation in Proto-Indo-European language and its far-reaching consequences in all of the modern Indo-European languages....
. The athematic stems are more archaic, and they are classified further by their ablaut behaviour (acro-dynamic, protero-dynamic, hystero-dynamic and holo-dynamic, after the positioning of the early PIE accent (dynamis) in the paradigm).

Pronoun


PIE pronouns are difficult to reconstruct owing to their variety in later languages. This is especially the case for demonstrative pronouns. PIE had personal pronoun
Pronoun

In linguistics and grammar, a pronoun is a pro-form that substitutes for a noun with or without a Determiner , such as Wiktionary:you and Wiktionary:they in English language....
s in the first and second person
Grammatical person

Grammatical person, in linguistics, is deixis 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....
, but not the third person, where demonstratives were used instead. The personal pronouns had their own unique forms and endings, and some had two distinct stems
Suppletion

In linguistics and etymology, suppletion is traditionally understood as the use of one word as the inflection form of another word when the two words are not cognate....
; this is most obvious in the first person singular, where the two stems are still preserved in English I and me. According to Beekes, there were also two varieties for the accusative, genitive and dative cases, a stressed and an enclitic form.

 Personal pronouns (Beekes)
 First personSecond person
 SingularPluralSingularPlural
Nominative
Nominative case

The nominative case is a grammatical case for a noun, which generally marks the subject of a verb, as opposed to its object or other verb arguments....
Accusative
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....
Genitive
Genitive case

In grammar, the genitive case or possessive case is the grammatical case that marks a noun as modifying another noun. It often marks a noun as being the possessor of another noun but it can also indicate various relationships other than possession; certain verbs may take argument in the genitive case; and it may have adverbial uses ....
Dative
Dative case

The dative case is a grammatical case generally used to indicate the noun to whom something is given. For example, in "John gave a book to Mary"....
Instrumental
Instrumental case

The instrumental case is a grammatical case used to indicate that a noun is the instrument or means by or with which the subject achieves or accomplishes an action....
??
Ablative
Ablative case

In linguistics, ablative case is a name given to grammatical case in various languages whose common characteristic is that they mark motion away from something, though the details in each language may differ....
Locative
Locative case

Locative is a grammatical case which indicates a location. It corresponds vaguely to the English prepositions "in", "on", "at", and "by". The locative case belongs to the general local cases together with the lative case and separative case case....


As for demonstratives, Beekes tentatively reconstructs a system with only two pronouns: "this, that" and "the (just named)" (anaphoric
Anaphora (linguistics)

In linguistics, anaphora is an instance of an expression referring to another.In general, an anaphoric expression is represented by a pro-form or some kind of deixis....
). He also postulates three adverbial particles "here", "there" and "away, again", from which demonstratives were constructed in various later languages.

Verb


The Indo-European verb system is complex and, as the noun, exhibits a system of ablaut
Indo-European ablaut

In linguistics, the term ablaut designates a system of vowel gradation in Proto-Indo-European language and its far-reaching consequences in all of the modern Indo-European languages....
. Verb
Verb

In syntax, a verb is a word that usually denotes an action , an occurrence , or a state of being . Depending on the language, a verb may vary in form according to many factors, possibly including its grammatical tense, grammatical aspect, grammatical mood and grammatical voice....
s have at least four moods
Grammatical mood

Grammatical mood is one of a set of distinctive verb forms that are used to signal Linguistic modality.It is distinct from grammatical tense or grammatical aspect, although these concepts are conflated to some degree in many languages, including English and most other modern Indo-European languages, insofar as the same word patterns are used...
 (indicative, imperative
Imperative mood

The imperative mood is a grammatical mood that expresses direct commands or requests. It is also used to signal a prohibition, permission or any other kind of exhortation....
, subjunctive
Subjunctive mood

In grammar, the subjunctive mood is a verb grammatical mood that exists in many languages. It is typically used in dependent clauses to express wishes, commands, emotion, possibility, judgment, opinion, necessity, or statements that are contrary to fact at present....
 and optative
Optative mood

The optative mood is a grammatical mood that indicates a wish or hope. It is similar to the cohortative mood, and closely related to the subjunctive mood....
, as well as possibly the injunctive
Injunctive mood

The injunctive mood was a mood in Sanskrit characterized by secondary endings but no Augment , and usually looked like an augmentless aorist or imperfect....
, reconstructible from Vedic Sanskrit), two voices
Grammatical voice

In grammar, the voice of a verb describes the relationship between the action that the verb expresses and the participants identified by its verb arguments ....
 (active and mediopassive
Mediopassive voice

The mediopassive voice is a grammatical voice which subsumes the meanings of both the middle voice and the passive voice.Languages of the Indo-European languages family typically have two or three voices of the three: active, middle, and passive....
), as well as three persons
Grammatical person

Grammatical person, in linguistics, is deixis 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....
 (first, second and third) and three numbers
Grammatical number

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

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

Plural is a grammatical number, typically referring to more than one of the referent in the real world. In the English language, singular and plural are the only grammatical numbers....
). Verbs are conjugated in at least three "tenses" (present
Present tense

The present tense is the Grammatical tense that may be used to express:* action at the present* a state of being;* a habitual action;* an occurrence in the near future; or...
, aorist, and perfect), which actually have primarily aspect
Grammatical aspect

In linguistics, the grammatical aspect of a verb defines the temporal flow in the described event or state. In English, for example, the past-tense sentences "I swam" and "I was swimming" differ in aspect ....
ual value. Indicative forms of the imperfect
Imperfect tense

The imperfect tense, in the classical grammar of several Indo-European languages, denotes a past tense with an imperfective aspect. In English, it is referred to as the past continuous tense....
 and (less likely) the pluperfect
Pluperfect tense

The pluperfect tense , also called past perfect in English language, is a perfective grammatical tense that exists in most Indo-European languages, used to refer to an event that has been completed before another past action....
 may have existed. Verbs were also marked by a highly developed system of participle
Participle

In linguistics, a participle is a derivative of a non-finite verb verb, which can be used in compound Grammatical tense or Grammatical voice, or as a Grammatical modifier....
s, one for each combination of tense and mood, and an assorted array of verbal noun
Verbal noun

A verbal noun is a noun formed directly as an inflexion of a verb or a verb Stem , sharing at least in part its constructions. This term is applied especially to gerunds, and sometimes also to infinitives and supines....
s and adjectival formations.

  BuckBeekes
  AthematicThematicAthematicThematic
Singular1st
2nd
3rd
Plural1st
2nd
3rd


Numbers


The Proto-Indo-European
Proto-Indo-European language

The Proto-Indo-European language is the unattested, linguistic reconstruction common ancestor of the Indo-European languages, spoken by the Proto-Indo-Europeans....
 numerals are generally reconstructed as follows:

SihlerBeekes
one
two
three(full grade) / (zero grade)
four(o-grade) / (zero grade)
(see also the )
five
sixoriginally perhaps
seven
eightor ,
nine
ten
twentyoriginally perhaps
thirtyoriginally perhaps
fortyoriginally perhaps
fiftyoriginally perhaps
sixtyoriginally perhaps
seventyoriginally perhaps
eightyoriginally perhaps
ninetyoriginally perhaps
hundredoriginally perhaps
thousand
Lehmann believes that the numbers greater than ten were constructed separately in the dialects groups and that originally meant "a large number" rather than specifically "one hundred."

Particle


Many particles could be used both as adverbs and postpositions, like "under, below". The postpositions became prepositions in most daughter languages. Other reconstructible particles include negators , conjunctions
Grammatical conjunction

In grammar, a conjunction is a part of speech that connects two words, phrases or clauses together. This definition may overlap with that of other parts of speech, so what constitutes a "conjunction" should be defined for each language....
 ( "and", "or" and others) and an interjection
Interjection

An interjection is a part of speech that usually has no grammatical connection with the rest of the Sentence and simply expresses emotion on the part of the speaker, although most interjections have clear definitions....
 (an expression of woe or agony).

Sample texts


As PIE was spoken by a prehistoric society, no genuine sample texts are available, but since the 19th century modern scholars have made various attempts to compose example texts for purposes of illustration. These texts are educated guesses at best; Calvert Watkins
Calvert Watkins

Calvert Watkins is a professor Emeritus of linguistics and the classics at Harvard University and professor-in-residence at UCLA.His doctoral dissertation, Indo-European Origins of the Celtic Verb I....
 in 1969 observes that in spite of its 150 years' history, comparative linguistics is not in the position to reconstruct a single well-formed sentence in PIE. Nevertheless, such texts do have the merit of giving an impression of what a coherent utterance in PIE might have sounded like.

Published PIE sample texts:
  • Schleicher's fable
    Schleicher's fable

    Schleicher's fable is an artificial text composed in the reconstructed language Proto-Indo-European language , published by August Schleicher in 1868....
     () by August Schleicher (1868), modernized by Hermann Hirt
    Hermann Hirt

    Hermann Hirt was an Indo-Europeanist.Hirt made foundational contributions to the study of Proto-Indo-European language Accent and Indo-European ablaut....
     (1939) and Winfred Lehmann and Ladislav Zgusta
    Ladislav Zgusta

    Ladislav Zgusta was an historical linguist and lexicography of Czech people origins. He was an emeritus professor of linguistics and classics at the University of Illinois at Urbana-Champaign....
     (1979)
  • The king and the god
    The king and the god

    The king and the god is the title of a short dialogue composed in the reconstructed Proto-Indo-European language. It is loosely based on the "king Harishcandra" episode of Aitareya Brahmana ....
     () by S. K. Sen, E. P. Hamp et al. (1994)


See also

  • Laryngeal theory
    Laryngeal theory

    The laryngeal theory is a generally accepted theory of historical linguistics which proposes the existence of a set of three consonant sounds known as "laryngeals" that appear in most current reconstructions of the Proto-Indo-European language ....
  • Proto-Indo-Europeans
    Proto-Indo-Europeans

    The Proto-Indo-Europeans were the speakers of the Proto-Indo-European language, and likely lived around 4000 BC, during the Copper Age and the Bronze Age, or possibly earlier, during the Neolithic or Paleolithic eras....
  • Indo-European studies
    Indo-European studies

    Indo-European studies is a field of linguistics dealing with Indo-European languages, both current and extinct. Its goal is to amass information about the hypothetical proto-language from which all of these languages are descended, a language dubbed Proto-Indo-European language , and its speakers, the Proto-Indo-Europeans, including their soc...
  • Proto-Indo-European religion
    Proto-Indo-European religion

    The existence of similarities among the Deity and religious practices of the Indo-Europeans peoples allows glimpses of a common Proto-Indo-Europeans religion and mythology....
  • Proto-Human language
  • Indo-European s-mobile
    Indo-European s-mobile

    In Indo-European studies, the term s-mobile designates the phenomenon where a Proto-Indo-European root begins with an which is sometimes but not always present....


Daughter proto-languages

  • Proto-Armenian language
    Proto-Armenian language

    The earliest testimony of the Armenian language dates to the 5th century AD . The earlier history of the language is unclear and the subject of much speculation....
  • Proto-Balto-Slavic language
  • Proto-Celtic language
    Proto-Celtic language

    The Proto-Celtic language, also called Common Celtic, is the putative ancestor of all the known Celtic languages. Its lexis can be confidently reconstructed on the basis of the comparative method of historical linguistics....
  • Proto-Germanic language
    Proto-Germanic language

    Proto-Germanic, or Common Germanic, as it is sometimes known, is the hypothetical common ancestor of all the Germanic languages such as modern English language, Dutch language, German language, Danish language, Norwegian language, Icelandic language, Faroese language, and Swedish language....
  • Proto-Greek language
    Proto-Greek language

    The Proto-Greek language is the assumed last common ancestor of all known varieties of Greek language, including Mycenaean Greek language, the ancient Greek ancient Greek dialects , and ultimately Koine Greek, Medieval Greek and modern Greek....
  • Proto-Indo-Iranian language
    Proto-Indo-Iranian language

    Proto-Indo-Iranian, is the Linguistic reconstruction proto-language of the Indo-Iranian languages branch of Indo-European language. Its speakers, the hypothetical Proto-Indo-Iranians, are assumed to have lived in the late 3rd millennium BC, and are usually connected with the early Andronovo archaeological horizon....


External links

  • (contains Indo-European Grammar in Vorwort section)
  • (University of Texas)
  • (by Vyacheslav V. Ivanov)
  • American Heritage Dictionary:
    • , essay on the reconstruction of Proto-Indo-European
    • , index
  • (Leiden University)
  • at the University of Texas
    University of Texas at Austin

    The University of Texas at Austin is a public university research university located in Austin, Texas, Texas, United States, and is the flagship#University campuses institution of University of Texas System....
  • by Frederik Kortlandt
    Frederik Kortlandt

    Frederik Herman Henri Kortlandt is a professor of descriptive and comparative linguistics at Leiden University. He is an expert on Baltic languages and Slavic languages, the Indo-European languages in general, and Proto-Indo-European language, though he has also published studies of languages in many other language families....
  • (by Geoffrey Sampson)
  • (by Piotr Gasiorowski)
  • (by S.L.Nikolaev and S.A.Starostin)
  • by Václav Blažek
    Václav Blažek

    V?clav Bla?ek is a historical linguist. He is a professor at Masaryk University and also teaches at the University of West Bohemia .His major interests include Indo-European languages, Uralic languages, Altaic languages, Afro-Asiatic languages, Nostratic languages, Dene-Caucasian languages, and mathematical linguistics ....
    . ISSN 1801-5336 (Brno
    Brno

    Brno is the second-largest city in the Czech Republic. It was founded in 1243, although the area had been settled since the 5th century. Today Brno has 403,304 inhabitants and is the seat of the Constitutional Court of the Czech Republic, Supreme Court, Supreme Administrative Court, Supreme Prosecutor's Office and Ombudsman....
    , Czech Republic
    Czech Republic

    The Czech Republic , is a landlocked country in Central Europe. The country borders Poland to the northeast, Germany to the west, Austria to the south and Slovakia to the east....
    )
  • List of Proto-Indo-European roots (from Wiktionary)