Russian phonology

This article discusses the phonological system of standard Russian based on the Moscow dialect (unless otherwise noted). For discussion of other dialects, see Russian dialects. Most descriptions of Russian describe it as having five vowel phonemes, though there is some dispute over whether a sixth vowel, /ɨ/, is separate from /i/. Russian has 34 consonants, which can be divided into two sets:

Russian has vowel reduction in unstressed syllables. This feature is found in English, but not in most other Slavic languages, such as Polish, Czech, and Serbo-Croatian.

Russian has five or six vowels in stressed syllables, /a e i o u/ and in some analyses /ɨ/, but only two or three vowels in unstressed syllables: /a i u/ after hard consonants and /i u/ after soft ones.

A long-standing dispute among linguists is whether Russian has five vowel phonemes or six; that is, scholars disagree as to whether [ɨ] constitutes an allophone of /i/ or if there is an independent phoneme /ɨ/. The five-vowel analysis, taken up by the Moscow school, rests on the complementary distribution of [ɨ] and [i], with the former occurring after hard (non-palatalized) consonants and [i] elsewhere.

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