The modern
phonological system of Russian is inherited from
Common Slavonic but underwent considerable innovation in the early historical period before it was largely settled by about 1400. Like other
Slavic languages,
Old Russian was a language of
open syllables. All syllables ended in vowels; consonant clusters, with far less variety than today, existed only in the
syllable onset. However, by the time of the earliest records, Old Russian already showed characteristic divergences from
Common Slavonic. Despite the various sound changes, Russian is in many respects a relatively conservative language, and is important in reconstructing Proto-Slavic: • Russian largely preserves the position of the Proto-Slavic accent, including the complex systems of alternating stress in nouns, verbs and short adjectives. • Russian consistently preserves between vowels, unlike all other modern Slavic languages. • Russian preserves palatalized consonants better than all other East and West Slavic languages, making it important for the reconstruction of
yers. • The Russian development of CerC, CorC, CĭrC, CŭrC and similar sequences is straightforward and in most cases easily reversible to yield the Proto-Slavic equivalent. Similarly the development of the strong yers is straightforward and preserves the front-back distinction. (But note that Russian shows early development of *CelC > *ColC and *CĭlC > *CŭlC, obscuring the front-back differences in these sequences.)
Vowels Loss of yers As with all other Slavic languages, the ultra-short vowels termed
yers were lost or transformed. From the documentary evidence of
Old East Slavic, this appears to have happened in the 12th century, about 200 years after its occurrence in
Old Church Slavonic. The result was straightforward, with reflexes that preserve the front-back distinction between the yers in nearly all circumstances: • Strong > , with palatalization of the preceding consonant • Strong > , without palatalization of the preceding consonant • Weak is lost, with palatalization of the preceding consonant • Weak is lost, without palatalization of the preceding consonant See the article on
yers for the hypothesized pronunciation of these sounds and the meaning of the strong vs. weak distinction. Examples: •
Old East Slavic > Russian "about me" • Old East Slavic > Russian "sleep (nom. sg.)", cognate with Lat. somnus • Old East Slavic > Russian "of sleep (gen. sg.)" The loss of the yers caused the phonemicization of palatalized consonants and led to geminated consonants and a much greater variety of consonant clusters, with attendant voicing and/or devoicing in the assimilation: • Old East Slavic > Russian ('where'). Unlike most other Slavic languages, so-called
yer tensing (the special development of > and > for some yers preceding ) did not happen in Russian, nor was later lost. Yers preceding developed as elsewhere; when dropped, a sequence
Cʲj developed, which is preserved as such only in Russian. (*Cʲj >
CʲCʲ in Ukrainian and Belarusian; elsewhere, it generally merged with *Cʲ or *Cj, or the was dropped early on.) The main exception to the lack of yer tensing is: • in long adjectives, where nominative becomes expected (
ój, ) only when stressed, but (
yj, ) otherwise (possibly influenced by
Church Slavonic) and nominative (which is never stressed) always becomes yer-tensed (
ij). • Although the spelling represents yer-tensing, pronunciation without yer-tensing is still possible: 'new', 'loud'. • In adjectives ending in ⟨-кий, -гий, -хий⟩, pronouncing without yer-tensing (and consequently with an unpalatalized consonant, as it is followed by a morphophonemic |o|; e.g. in 'loud') is considered traditional Moscow pronunciation, but is now uncommon. • Besides long adjectives (, , , e. g. 'blue') the spelling instead of expected * for unstressed is also used in possessive adjectives (, , , e. g. 'wolf's'; the ordinal number 'third' has the same declension) and in genitive plural forms of words ending in or (e. g. 'naughty girl', gen. pl. ; but under stress: 'bench', gen. pl. ; exceptionally, the gen. pl. of "gun" is spelled ). • However, in nouns indeed becomes expected untensed (
ej), pronounced when unstressed (as in "hoarfrost" from PSl. ) and when stressed (as in "
couch grass" from PSl. ). These words conserve in object cases in modern Russian (genitive: , ), but "beehive" and "furuncle" have genitive , . Some yers in weak position developed as if strong to avoid overly awkward consonant clusters: • Proto-Slavic "stem, stalk" > (
stebló) (cf.
Old Czech '
, Czech ' or (dialectal) '
, Old Polish ' or '
, Polish ', all meaning "stalk, straw") • Proto-Slavic "variegated" > (
pjóstryj) (cf.
Polish '
, but Czech ') • Proto-Slavic "to ring, to clank" > (
zvenétʹ) (cf.
Old Czech '
, Czech ') As shown, Czech and especially Polish are more tolerant of consonant clusters than Russian; but Russian is still more tolerant than
Serbo-Croatian or
Bulgarian: Proto-Slavic "mist, haze" > (
mgla) (cf.
Old Czech '
, Polish ', but
Serbo-Croatian ''
, Bulgarian (măglá'')).
Loss of nasal vowels The nasal vowels (spelled in the
Cyrillic alphabet with
yuses), which had developed from Common Slavic and before a consonant, were replaced with nonnasalized vowels: • Proto-Slavic > Russian u • Proto-Slavic > Russian ja (i.e. with palatalization or softening of the preceding consonant) Examples: •
PIE "they are" >
Proto-Slavic > (
sutʹ) (literary in modern Russian; cf.
Old Church Slavonic (
sǫtĭ),
Polish '
, Latin ') • Proto-Slavic "hand" > Russian (
ruká) (cf. Polish '
, Lithuanian ') • Proto-Slavic "meat" > Russian (
mjáso) (cf. Polish ''
, Old Church Slavonic (męso
), Old Prussian mensa
, Gothic (mims
), Sanskrit (māṃsa'')) • PIE "five" >> Proto-Slavic > Russian (
pjátʹ) (cf. Polish ''
, Old Church Slavonic (pętĭ
), Lithuanian , Ancient Greek (pénte
), Sanskrit (páñcan'')) In the case of Proto-Slavic > Russian ja, the palatalization of the preceding consonant was due to the general Russian palatalization before all front vowels, which occurred prior to the lowering of to . If the preceding consonant was already soft, no additional palatalization occurred, and the result is written rather than when following the palatal consonants (
š ž č šč c): • Proto-Slavic "to begin" > Russian (
načatʹ) (cf. Old Church Slavonic (
načęti)) • Proto-Slavic "harvest" > Russian (
žátva) (cf. Old Church Slavonic (
žętva)) Nearly all occurrences of Russian (
ja) following a consonant other than (
l), (
n) or (
r) are due to nasal vowels or are recent borrowings. Borrowings in the
Uralic languages with interpolated after Common Slavonic nasal vowels have been taken to indicate that the nasal vowels existed in East Slavic until some time possibly just before the historical period.
Loss of prosodic distinctions In earlier Common Slavic, vowel length was allophonic, an automatic concomitant to vowel quality, with short and all other vowels (including nasal vowels) long. By the end of the Common Slavic period, however, various sound changes (e.g. pre-tonic vowel shortening followed by
Dybo's law) produced contrastive vowel length. This vowel length survives (to varying extents) in Czech, Slovak, Serbian, Croatian, Slovenian and Old Polish, but was lost entirely early in the history of Russian, with almost no remnants. (A possible remnant is a distinction between two
o-like vowels, e.g. and , in some Russian dialects, that may partly reflect earlier length distinctions.) Proto-Slavic accentual distinctions (circumflex vs. acute vs. neoacute) were also lost early in the history of Russian. It has often been hypothesized that the accentual distinctions were first converted into length distinctions, as in
West Slavic, followed by the loss of distinctive vowel length. Pretty much the only reflex of the accentual type is found in the stress pattern of pleophonic sequences like
CereC, CoroC, ColoC (where C = any consonant); see
below. Notably, however, the position (as opposed to the type) of the accent was largely preserved in Russian as a
stress-type accent (whereas the Proto-Slavic accent was a
pitch accent). The complex stress patterns of Russian nouns, verbs and short adjectives are a direct inheritance from Late Common Slavic, with relatively few changes.
Pleophony and CVRC sequences Pleophony or "full-voicing" (
polnoglasie, ) is the addition of vowels on either side of and in Proto-Slavic sequences like CorC where C = any consonant. The specific sound changes involved are as follows: • *CerC > CereC • *CorC > CoroC • *CelC, *ColC > ColoC • *CьrC > CerC • *CъrC > CorC • *CьlC, *CъlC > ColC Examples: • Proto-Slavic ''
"bank (of a river), shore" > Russian (béreg
); cf. Old Church Slavonic (brěgŭ'') • Proto-Slavic ''
"frost" > Russian (moróz
); cf. Old Church Slavonic (mrazŭ'') • Proto-Slavic ''
"chaff" > Russian (polóva
); cf. Old Church Slavonic (plěva'') • Proto-Slavic ''
"ear (of corn), spike" > Russian (kólos
); cf. Old Church Slavonic (klasŭ'') • Proto-Slavic ''
"sickle" > Russian (serp
); cf. Old Church Slavonic (srĭpŭ'') • Proto-Slavic ''
"turtle dove" > Russian (górlica
); cf. Old Church Slavonic (grŭlica'') • Proto-Slavic ''
"hill" > Russian (xolm
); Old Church Slavonic (xlŭmŭ'') • Proto-Slavic ''
"wolf" > Russian (volk
); Old Church Slavonic (vlĭkŭ'') Note that Church Slavonic influence has made it less common in Russian than in modern Ukrainian and Belarusian: • Ukrainian: • Russian: ('Vladimir') (although a familiar form of the name in Russian is still ). When a Proto-Slavic sequence like *CerC was accented, the position of the accent in the resulting pleophonic sequence depends on the type of accent (circumflex, acute or neoacute). This is one of the few places in Russian where different types of accents resulted in differing reflexes. In particular, a sequence like CéreC, with the stress on the first syllable, resulted from a Proto-Slavic circumflex accent, while a sequence like CeréC, with the stress on the second syllable, resulted from a Proto-Slavic acute or neoacute accent. Examples: • Proto-Slavic ''
"town" (circumflex) > (górod'') • Proto-Slavic ''
"doorsill" (acute) > (poróg'') • Proto-Slavic ''
"king" (neoacute) > (korólʹ'')
Development of *i and *y Proto-Slavic and contrasted only after
alveolars and
labials. After
palatals only occurred, and after
velars only occurred. With the development of phonemic palatalized alveolars and labials in Old East Slavic, and no longer contrasted in any environment, and were reinterpreted as
allophones of each other, becoming a single phoneme . Note that this reinterpretation entailed no change in the pronunciation and no mergers. Subsequently, (sometime between the twelfth and fourteenth centuries), the allophone of occurring after a velar consonant changed from to with subsequent palatalization of the velar. Hence, for example, Old Russian became modern . Conversely, the soft consonants were hardened, causing the allophone of to change from to .
The yat vowel Proto-Slavic (from Balto-Slavic and Proto-Indo-European long *ē) developed into Old Russian , distinct from (the outcome of Proto-Slavic from Balto-Slavic and Proto-Indo-European short *e). They apparently remained distinct until the 18th century, although the timeline of the merger has been
debated. The sound denoted may have been a higher sound than , possibly high-mid vs. low-mid . They still remain distinct in some Russian dialects, as well as in
Ukrainian, where Proto-Slavic developed into respectively. The letter remained in use until 1918; its removal caused by far the greatest of all Russian
spelling controversies.
The yo vowel Proto-Slavic stressed developed into , spelled , when following a soft consonant but not preceding one; i.e. at word-final position or before a hard consonant. The shift happened after , which were still soft consonants at the time. The preceding consonant remained soft. • OR ('about which' loc. sg.) > R That has led to a number of alternations: This development occurred prior to the merger of ѣ (
yat) with е, and ѣ did not undergo this change, except by later analogy in a short list of words as of about a century ago. Nowadays, the change has been reverted in two of those exceptional words. • 'threading needle, bodkin' • 'nests' • 'glandule' (however 'piece of iron') • '[he/it is] depicted; [he/it is] imprinted (in the mind)' • 'stars' • '[he] used to yawn' • 'jibe' • () '[it is] (never) worn' • '[he] found' • 'saddles' • 'apprehension' • '[he] flowered, flourished' • '[he] used to put on' (this word has fallen into disuse in the standard language) • 'fuel, chips; instigation; firebrand' (this word has fallen into disuse in the standard language) • 'way-mark' (now ) • 'mole cricket', 'mole rat' (now ) The ѣ>ё change also occurred in the Old East Slavic pronoun (from PSl. 'her' -
possessive or
genitive -, also used as
accusative instead of original Russian: (
mylo) (cf.
Polish ) Consonant clusters created by the loss of yers were sometimes simplified, but are still preserved in spelling: • (
zdravstvujte) "hello" (first
v rarely pronounced; such a pronunciation might indicate that the speaker intends to give the word its archaic meaning "be healthy") :* (
sérdce) "heart" (
d not pronounced), but
d is pronounced in the genitive plural (
sérdec) ) :* (
solnce) "sun" (
l not pronounced), but
l is pronounced in adjectival (
sólnečnyj) "solar" and diminutive (
sólnyško) "small sun, sweetheart"
Development of palatalized consonants Around the tenth century, Russian may have already had paired coronal fricatives and
sonorants so that could have contrasted with , but any possible contrasts were limited to specific environments. Otherwise, palatalized consonants appeared allophonically before front vowels. When the
yers were lost, the palatalization initially triggered by high vowels remained, creating minimal pairs like ('given') and ('tribute'). At the same time, , which was already a part of the vocalic system, was reanalyzed as an allophone of after hard consonants, prompting leveling that caused vowels to alternate according to the preceding consonant rather than vice versa. Sometime between the twelfth and fourteenth centuries, the velars became allophonically palatalized before , which caused its pronunciation to change from to . This is reflected in spelling, which writes e.g. (
gíbkij) rather than (
gybkyj).
Depalatalization The palatalized unpaired consonants depalatalized at some point, with becoming
retroflex and . This did not happen, however, to , which remains to this day as palatalized . Similarly did not depalatalize, becoming (formerly and still occasionally ). The depalatalization of is largely not reflected in spelling, which still writes e.g. (
šitʹ), rather than (
šytʹ), despite the pronunciation . Paired palatalized consonants other than and sometimes and eventually lost their palatalization when followed by another consonant. This is generally reflected in spelling. Examples: • Proto-Slavic "to stick" > Russian (
lʹnutʹ) • Proto-Slavic "sun" > Russian (
sólnce) • Proto-Slavic "ox-yoke" > Russian (
jarmó); but Proto-Slavic "bitter" > Russian (
gorʹkij) • Proto-Slavic "ancient" > Russian (
drévnij) • Proto-Slavic "cowberry" >> Russian (
brusníka)
Incomplete early palatalizations There is a tendency to maintain intermediate ancient , , etc. before front vowels, in contrast to other Slavic languages. This is the so-called
incomplete second and third palatalizations: •
Ukrainian • Russian: ('leg'
dat.) It is debated whether these palatalizations never occurred in these cases or were due to later analogical developments. A relevant data point in this respect is the
Old Novgorod dialect, where the
second palatalization is not reflected in spelling and may never have happened.
Development of palatal consonants The Proto-Slavic palatal series of consonants (not to be confused with the later palatalized consonants that developed in Russian) developed as follows: • The palatal resonants merged with the new palatalized consonants *lʲ *nʲ *rʲ that developed before Proto-Slavic front vowels. • The palatal plosives merged with . Note, however, that Proto-Slavic appear as (commonly notated
šč žd and pronounced respectively, although was formerly pronounced , as its transcription suggests) in words borrowed from
Old Church Slavonic. • The palatal clusters developed into sounds denoted respectively and either or (nowadays normatively pronounced , although there is a strong tendency to instead pronounce and as hard ). • The palatal fricatives hardened into
retroflex (although the affricate remained as soft ).
Degemination Many double consonants have become degeminated but are still written with two letters. (In a 1968 study, long remains long in only half of the words in which it appears written, but long did so only a sixth of the time. The study, however, did not distinguish spelling from actual historical pronunciation, since it included loanwords in which consonants were written doubled but never pronounced long in Russian.)
Effect of loanwords A number of the phonological features of Russian are attributable to the introduction of loanwords (especially from non-Slavic languages), including: • Sequences of two vowels within a morpheme. Only a handful of such words, like 'spider' and 'slap in the face' are native. • 'poet'. From
French . • 'mourning'. From
German . • Word-initial , except for the prefix э-. • 'era'. From German . • Word-initial . (Proto-Slavic *a- > Russian
ja-) • 'avenue. From French . • 'swindle'. From French . • 'lamb'. From
Church Slavonic • The phoneme (see
Ef (Cyrillic) for more information). • 'phoneme'. From
Greek . • '
ether'. From Greek . • 'fiasco'. From
Italian . • The occurrence of non-palatalized consonants before within roots. (The initial of a suffix or flexion invariably triggers palatalization of an immediately preceding consonant, as in / / .) • The sequence within a morpheme. • ) 'gin' from
English. • 'jazz' from English.
Morphology and syntax Some of the morphological characteristics of Russian are: • Loss of the
vocative case • Loss of the
aorist and
imperfect tenses (still preserved in Old Russian) • Loss of the short adjective declensions except in the nominative • Preservation of all Proto-Slavic participles ==See also==