Split from Indo-European Proto-Balto-Slavic has the
satem sound changes wherein
Proto-Indo-European (PIE)
palatovelar consonants became affricate or
fricative consonants pronounced closer to the front of the mouth, conventionally indicated as
*ś and
*ź. These became simple dental fricatives
*s and
*z in Proto-Slavic: • → *ś → *s • → *ź → *z • → *ź → *z This sound change was incomplete, in that all Baltic and Slavic languages have instances where PIE palatovelars appear as and , often in doublets (i.e. etymologically related words, where one has a sound descended from
*k or
*g and the other has a sound descended from
*ś or
*ź) such as and , both descended from PIE . Other satem sound changes are
delabialization of labiovelar consonants before rounded vowels and the
ruki sound law, which shifted
*s to
*š after
*r,
*u,
*k or
*i. In Proto-Slavic, this sound was shifted backwards to become
*x, although it was often shifted forward again by one of the three sound laws causing palatalization of velars. In the Balto-Slavic period, final and were lost. Also present in Balto-Slavic were the diphthongs *ei and *ai as well as
liquid diphthongs *ul, *il, *ur, *ir, the latter set deriving from syllabic liquids; the vocalic element merged with *u after labiovelar stops and with *i everywhere else, and the remaining labiovelars subsequently lost their labialization. Around this time, the PIE aspirated consonants merged with voiced ones: • → • → • → Once it split off, the Proto-Slavic period probably encompassed a period of stability lasting 2,000 years with only several centuries of rapid change before and during the breakup of Slavic linguistic unity that came about due to Slavic migrations in the early sixth century. As such, the chronology of changes including the three palatalizations and ending with the change of *ě to *a in certain contexts defines the Common Slavic period. Long *ē and *ō raised to *ī and *ū before a final sonorant, and sonorants following a long vowel were deleted. Proto-Slavic shared the common Balto-Slavic merging of *o with *a. However, while long *ō and *ā remained distinct in Baltic, they merged in Slavic (after the previous change), so that early Slavic did not possess the sounds *o or *ō.
Elimination of syllable codas A tendency for rising sonority in a syllable (arrangement of phonemes in a syllable from lower to higher sonority) marks the beginning of the Common Slavic period. One aspect of this, generally referred to as the "Law of Open Syllables", led to a gradual elimination of
closed syllables. When possible, consonants in the coda were resyllabified into the onset of the following syllable. For example, "to him" became (
OCS ), and "to give back" became (OCS ). This did not always entail actual phonetic change, but simply a reinterpretation of syllable boundaries, and was possible only when the entire cluster could begin a syllable or word (as in *nj, *zd, *stv, but not *nt, *rd, *pn). When the cluster was not permissible as a syllable onset, any impermissible consonants were deleted from the coda. Thus, e.g. PIE > Slavic , eliminating the impermissible onset
pn-. With regard to clusters of stop + sonorant, not all Slavic languages show the same outcome. The cluster
*dl is preserved in West Slavic, but simplified to
*l in East and South Slavic, e.g. > Czech , Polish , but not Serbo-Croatian . The verb appears with the cluster
gn intact in South and West Slavic, while it is simplified to
n in East Slavic. The verb , on the other hand, preserves the cluster
dn only in Czech and Slovak, simplifying it to
n elsewhere. As part of this development, diphthongs were
monophthongized, and nasal consonants in the syllable coda were reduced to nasalization of the preceding vowel ( and ).
Liquid diphthongs were eliminated in most Slavic languages, but with different outcomes in different languages. After these changes, a CV syllable structure (that is, one of segments ordered from lower to higher sonority) arose and the syllable became a basic structural unit of the language.
Syllable synharmony Another tendency arose in the Common Slavic period wherein successive segmental phonemes in a syllable assimilated articulatory features (primarily
place of articulation). This is called
syllable synharmony or
intrasyllabic harmony. Thus syllables (rather than just the consonant or the vowel) were distinguished as either "soft" (palatal) or "hard" (non-palatal). This led to consonants developing
palatalized allophones in syllables containing front vowels, resulting in the first regressive palatalization. It also led to the fronting of back vowels after /j/.
Nasalization Syllable-final nasals *m and *n (i.e. when not directly followed by a vowel) coalesced with a previous vowel, causing it to become
nasalized (indicated with an
ogonek diacritic below the vowel): The nasal element of *im, *in, *um, *un is lost word-finally in inflectional endings, and therefore does not cause nasalization. Examples showing these developments: The nasalization of *ų̄ was eventually lost. However, when *ų̄ followed a
palatal consonant such as /j/ (indicated generically as *J), it was
fronted to *į̄, which preserved its nasalization much longer. This new *į̄ did not originally merge with the result of nasalizing original *im/*in, as shown in the table. Instead, it evolved in Common Slavic times to a high-mid nasal vowel *ę̇, higher than the low-mid vowel *ę. In South Slavic, these two vowels merged as *ę. Elsewhere, however, *ę̇ was denasalized, merging with *ě, while *ę was generally lowered to *æ̨ (often reflected as
ja). Common Slavic *
desętyję̇ koňę̇ "the tenth horses (accusative plural)" appears as
desętyję koňę in Old Church Slavonic and
desete konje in Serbo-Croatian (South Slavic), but as
desáté koně in modern Czech and
dziesiąte konie in Polish (West Slavic), and as
десятые кони (desjatyje koni, nominative plural) in Russian (East Slavic). Note that Polish normally preserves nasal vowels, but it does not have a nasal vowel in the accusative plural ending, while it retains it in the stem of "tenth". Nasalization also occurred before a nasal consonant, whenever a vowel was followed by two nasals. However, in this case, several later dialects denasalized the vowel at an early date. Both
pomęnǫti and
poměnǫti "remember" (from earlier *pa-men-nantī?) are found in Old Church Slavonic. The common word *
jĭmę "name" can be traced back to earlier *
inmen with denasalization, from a PIE zero grade alternant .
First regressive palatalization As an extension of the system of syllable synharmony, velar consonants were palatalized to postalveolar consonants before front vowels (*i, *ī, *e, *ē) and before *j: • *k → *č • *g → *dž → *ž • *x → *š • *sk → *šč • *zg → *ždž This was the first regressive palatalization. Although *g palatalized to an affricate, this soon lenited to a fricative (but *ždž was retained). Some Germanic loanwords were borrowed early enough to be affected by the first palatalization. One example is *šelmŭ, from earlier *xelmŭ, from Germanic *helmaz.
Iotation In a process called
iotation or
yodization, *j merged with a previous consonant (unless it was labial), and those consonants acquired a palatal articulation. Compare English
yod-coalescence. This change probably did not occur together with the first regressive palatalization, but somewhat later, and it remained productive well into the Late Common Slavic period. • *tj → *ť • *dj → *ď • *stj → *šť (→ presumably šč) • *zdj → *žď (→ presumably ždž) • *sj → *š • *zj → *ž • *lj → ľ • *nj → ň • *rj → ř The combinations *gt and *kt merged into *ť in Proto-Slavic times and show outcomes identical to *ť in all languages. This combination occurred in a few lexical items ( "daughter" *ji- (> *jь-) • *ī- > *jī- (> *ji-) • *u- > *wu- (> *vъ-) • *ū- > *wū- (> *vy-) • *e- > *je- • *ę- > *ję- • *ē- > *jē- (> *jě- or *ja-) In later Slavic,
*jь- and
*ji- appear to have merged, and both are reflected as simple
i- in many modern Slavic languages. In Common Slavic itself, however, they were still distinguished by length for the purpose of intonation. The sequence
*ji- could belong to accent paradigm
a, while the sequence
*jь- could not. Prothesis generally did not apply to short *a (which developed into *o or nasal *ǫ), although some East Slavic dialects seem to have developed it regardless. There seems to have been some uncertainty concerning the interpretation of long *ā as a rounded or unrounded vowel. Prothesis seems to have applied intermittently to it. When it does apply, *ā- > *jā- is frequent, but *ā- > *vā- is also found. The old diphthongs
*ei- and
*ai- develop the same as
*ī- and
*ē- respectively, although
*ai- never develops into
*ja-. The diphthong
*au-, later
*u-, mostly resists prothesis, but some cases (e.g. ) also show
*ju-.
Monophthongization and other vowel changes • ū lost its labialization (possibly or , represented hereafter as , as in modern Polish), but not before prothesis occurred, as prothesis of *v before unrounded *y seems unlikely. This was closely followed by the
monophthongization of diphthongs in all environments, in accordance with the law of open syllables. Following this change, short *a acquired non-distinctive rounding (probably in first instance), and is denoted as *o from this point onwards. • *ū → *ȳ → y • *au, *eu → *ū • *ei → *ī • *ai → *ē or ī • *a → *o In many common grammatical forms such as the nominative plural of o-stems , the second person imperative , in the second singular of athematic verbs and in the dative singular of the clitic personal pronouns, *ai became *ī .
Second regressive palatalization Proto-Slavic had acquired front vowels,
ē (possibly an open front vowel ) and sometimes ī, from the earlier change of *ai to *ē/ī. This resulted in new sequences of velars followed by front vowels, where they did not occur before. Additionally, some new loanwords also had such sequences. However, Proto-Slavic was still operating under the system of syllabic synharmony. Therefore, the language underwent the
second regressive palatalization, in which velar consonants preceding the new (secondary) phonemes *ē and *ī, as well as *i and *e in new loanwords, were palatalized. As with the progressive palatalization, these became palatovelar. Soon after, palatovelar consonants from both the progressive palatalization and the second regressive palatalization became sibilants: • → *c () • → *dz (→ *z in most dialects) • → *ś → *s/*š In noun declension, the second regressive palatalization originally figured in two important Slavic stem types: o-stems (masculine and neuter consonant-stems) and a-stems (feminine and masculine vowel-stems). This rule operated in the o-stem masculine paradigm in three places: before nominative plural and both singular and plural locative affixes.
Progressive palatalization An additional palatalization of velar consonants occurred in Common Slavic times, formerly known as the
third palatalization but now more commonly termed the
progressive palatalization due to uncertainty over when exactly it occurred. Unlike the other two, it was triggered by a
preceding vowel, in particular a preceding *i or *ī, with or without an intervening *n. The outcomes are exactly the same as for the second regressive palatalization, i.e. alveolar rather than palatoalveolar affricates, including the East/West split in the outcome of palatalized *x: • → *c () • → *dz (→ *z in most dialects) • → *ś → *s/*š Examples: • *atiku(s) "father" (nom. sg.) → *aticu(s) → (with vowel fronting) Late Common Slavic *otьcь • Proto-Germanic *kuningaz "king" → Early Common Slavic *kuningu(s) → Late Common Slavic *kъnędzь • *vixu(s) "all" → *vьśь → *vьšь (West), *vьsь (East and South) There is significant debate over when this palatalization took place and the exact contexts in which the change was phonologically regular. The traditional view is that this palatalization took place just after the second regressive palatalization (hence its traditional designation as the "third palatalization"), or alternatively that the two occurred essentially simultaneously. This is based on the similarity of the development to the second regressive palatalization and examples like *atike "father" (voc. sg.) → *otьče (not *otьce) that appear to show that the first regressive palatalization preceded the progressive palatalization. A dissenting view places the progressive palatalization before one or both regressive palatalizations. This dates back to and was continued more recently by and . Lunt's chronology places the progressive palatalization first of the three, in the process explaining both the occurrence of *otĭče and the identity of the outcomes of the progressive and second regressive palatalizations: • Progressive palatalization: *k > *ḱ (presumably a
palatal stop) after *i(n) and *j • First regressive palatalization: *k/*ḱ > *č before front vowels • Fronting of back vowels after palatal consonants • Monophthongization of diphthongs • Second regressive palatalization: *k/*ḱ > *c before front vowels (similarly for *g and possibly *x) Significant complications to all theories are posed by the
Old Novgorod dialect, known particularly since the 1950s, which has no application of the second regressive palatalization and only partial application of the progressive palatalization (to *k and sometimes *g, but not to *x). More recent scholars have continued to argue in favor of the traditional chronology, and there is clearly still no consensus. The three palatalizations must have taken place between the 2nd and 9th century. The earlier date is the earliest likely date for Slavic contact with Germanic tribes (such as the migrating
Goths), because loanwords from Germanic (such as *
kъnędzь "king" mentioned above) are affected by all three palatalizations. On the other hand, loan words in the early historic period ( 9th century) are generally not affected by the palatalizations. For example, the name of the
Varangians, from Old Norse
Væringi, appears in
Old East Slavic as варѧгъ
varęgъ, with no evidence of the progressive palatalization (had it followed the full development as *
kuningaz did, the result would have been **
varędzь instead). The progressive palatalization also affected vowel fronting; it created palatal consonants before back vowels, which were then fronted. This does not necessarily guarantee a certain ordering of the changes, however, as explained above in the vowel fronting section.
Accentual developments The
Baltic languages, as well as conservative Slavic languages like Serbo-Croatian, have a complex accentual system with short and long vowels in all syllables, a free
pitch accent that can fall on any syllable, and multiple types of pitch accent. (Vowel length is normally considered a separate topic from accent, but in the Slavic languages in particular, the two are closely related, and are usually treated together.) Not surprisingly, the historical development of accent in the Slavic languages is complex and was one of the last areas to be clearly understood. Even now, there is no complete consensus. The Balto-Slavic languages inherited from PIE a free, mobile
pitch accent: • There was (at most) a single accented syllable per word, distinguished by higher pitch (as in e.g.
Mohawk) rather than greater dynamic stress (as in English). • The accent was
free in that it could occur on any syllable, and was phonemic (i.e. its position could not be automatically predicted). • The accent was
mobile in that its position could potentially vary among closely related words within a single paradigm. In inflectional paradigms, Proto-Slavic inherited the distinction between fixed-accented and mobile-accented paradigms from Proto-Balto-Slavic.
Acute, pitch and vowel length Proto-Balto-Slavic "long" syllables could have an additional feature known as "acute". This feature was inherited by Proto-Slavic, and was still present on all syllables throughout the Middle Common Slavic period. At this time, this distinction could occur on the following syllable types: • Those containing the long vowels *a *ě *i *u *y. • Those containing the nasal vowels *ę *ǫ. • Those containing a
liquid diphthong. When accented, acuted vowels developed a rising intonation, while non-acuted long vowels became falling in pitch. Short vowels, i.e. the vowels *e *o *ь *ъ, did not have distinctive intonations, but developed different pitch contours in different positions in the word. In the first syllable of the word, the pitch was falling, while in non-initial syllables the pitch was rising. The development of vowel length in Proto-Slavic remains controversial, with different linguists and linguistic schools holding different positions on the matter. Traditionally, it is held that Late Common Slavic retained the original distribution of short and long vowels, as it was inherited from Proto-Balto-Slavic. Under this position, vowel length was an automatic consequence of vowel quality, with *e *o *ь *ъ being always short, and all other vowels, including nasal vowels and liquid diphthongs, being always long. The decoupling of length from quality is ascribed to the post-Common Slavic period. Linguists of the Leiden accentological school, on the other hand, posit accentual changes that disrupted the original distribution of length, so that length became independent of quality. The most important early changes are: • The loss of the acute feature in all syllables, except in accented syllables and syllables that immediately followed the accent. The length of these syllables was retained. • The loss of the acute feature in syllables immediately following the accent, this time with shortening of the vowel. • Loss of all length distinctions in syllables preceding the accent. • Shortening of acuted accented syllables. The acute feature was converted into short rising pitch contour, while non-acuted long syllables received a long falling intonation. •
Van Wijk's law: Lengthening of vowels (except for yers and nasal vowels) following palatal consonants. This led to the increased occurrence of long vowels in the endings of
jā and
jo stems, which had consequences for Ivšić's law. Some of these long vowels were later shortened by analogy, especially in endings that were unstressed in the mobile paradigm. • Loss of
*j between two unaccented vowels, resulting in contraction of the adjacent syllables into a long vowel. This occurred only in some languages, especially Czech, and did not occur at all in Russian. This, again, affected Ivšić's law, which retracted the accent from these contracted long vowels but not from the uncontracted vowels. • Eventual loss of length in final syllables in most languages. However, the former long vowels are reflected to some extent in Slovene and Serbo-Croatian, and more directly by the neo-circumflex accent in Slovene, which developed early on from former acute-register syllables when followed by a long syllable or internal yer.
Meillet's law According to Meillet's law, words with a mobile accent paradigm lost the acute feature in the first syllable of the word, if there was one. Such words consequently do not show any difference in intonation in forms where the accent is on the first syllable; the pitch is always falling. Where the accent is on a non-initial syllable, the distinction is maintained.
Dybo's law Dybo's law was the first of the major accent shifts in Proto-Slavic. In fixed-accent inflectional paradigms, non-acute syllables (both short and long) lost the accent to the following syllable. This caused a split in the fixed-accented paradigms, between the acuted "accent paradigm
a", which retained the accent on the stem of the word, and the non-acuted "accent paradigm
b", where the accent had shifted onto the inflectional ending. In the traditional interpretation, the newly-accented syllable retained its acuteness until this point, and became rising or falling in pitch accordingly. Following the Leiden school, a formerly accented long syllable remained distinctively long, resulting in new long vowels before the accent. Newly accented long vowels gained a falling tone, while short vowels (whether originally short or shortened acute) received a rising tone. Dybo's law occurred before the loss of
*j between unstressed vowels, and could shift the accent onto the resulting long vowel. The accent would then be retracted again by Ivšić's law.
Havlík's law, Ivšić's law and the neoacute accent During the Late Common Slavic period, the short close vowels *ь *ъ (known as
yers) developed into "strong" and "weak" variants according to
Havlík's law. The weak variants could no longer be accented, and if they were accented before, the accent was retracted onto the preceding syllable if there was one. This change is known as
Ivšić's law or Stang's law. The newly-accented syllable gained a new type of rising accent, termed the
neoacute. Example: • Early Slavic "court of law, trial" > Middle Common Slavic > MCS (by
Dybo's law) > Late Common Slavic (= ) >
Čakavian (Vrgara) (
G sg ), Russian (
G sg ). The neoacuted vowel could be either short or long, depending on the original length of the syllable before the retraction. The short neoacute is denoted with a grave accent (
ò), while the long neoacute is variously written with an acute accent (
á, following Serbo-Croatian and Slovene notation) or with a tilde (
ã, following Chakavian notation). In West Slavic (except southern Slovak), short
e and
o gaining the neoacute were automatically lengthened. Retraction also occurred from long falling ("circumflex") vowels, such as in the following cases: • In verbs with a present tense in , e.g.: • MCS "s/he carries" > > Russian • From a vowel immediately preceded by an original , i.e. where van Wijk's law operated: • PSl. "s/he ties" > MCS > LCS > Russian • MCS "will" > > LCS > Russian dialectal Ivšić's law produced different results in different Slavic dialects. In languages that show long vowels through loss of
*j, followed by a shift of the accent onto the long vowel by Dybo's law, the accent is retracted again by Ivšić's law. In languages that retain
*j, the accent is shifted forward by Dybo's law, but then remains there if the vowel is short. After these changes, falling pitch could only occur on the first syllable of the word, where it contrasted with rising pitch. In non-initial syllables, all accented syllables were rising in pitch. The complicated accentual patterns produced by Ivšić's law were levelled to some degree already within Common Slavic. In
jā-stems this resulted in neoacute on the stem in all forms, and in
jo-stems in all plural forms. == See also ==