These features distinguish Finnic languages from other Uralic families:
Sound changes Sound changes shared by the various Finnic languages include the following: • Development of
long vowels and various
diphthongs from loss of word-medial consonants such as *x, *j, *w, *ŋ. • Before a consonant, the Uralic "
laryngeal" *x posited on some reconstructions yielded long vowels at an early stage (e.g. 'wind' >
tuuli), but only the Finnic branch clearly preserves these as such. Later, the same process occurred also between vowels (e.g. *mëxi 'land' >
maa). • Semivowels *j, *w were usually lost when a root ended in *i and contained a preceding front (in the case of *j, e.g. *täji 'tick' >
täi) or rounded vowel (in the case of *w, e.g. *suwi 'mouth' >
suu). • The
velar nasal *ŋ was vocalized everywhere except before *k, leading to its elimination as a phoneme. Depending on the position, the results included semivowels (e.g. *joŋsi 'bow' >
jousi, *suŋi 'summer'>
suvi) and full vocalization (e.g. *jäŋi 'ice' >
jää, *müŋä 'backside' > Estonian , Finnish ). • The development of an alternation between word-final *i and word-internal *e, from a Proto-Uralic second syllable vowel variously reconstructed as *i (as used in this article), *e or *ə. • Elimination of all Proto-Uralic palatalization contrasts: *ć, *δ́, *ń, *ś > *c, *δ, *n, *s. • Elimination of the affricate *č, merging with *š or *t, and the spirant *δ, merging with *t (e.g. *muδ́a 'earth' >
muta). See above, however, on treatment of *čk. • Assibilation of *t (from any source) to *c before *i. This later developed to widely: hence e.g. *weti 'water' > Estonian and Finnish (cf. retained in the partitive *wet-tä > Estonian , Finnish ). •
Consonant gradation, most often for stops, but also found for some other consonants. • A development *š > h, which, however, postdated the separation of South Estonian. Superstrate influence of the neighboring Indo-European language groups (Baltic and Germanic) has been proposed as an explanation for a majority of these changes, though for most of the phonetical details the case is not particularly strong.
Grammatical changes • Agreement of the attributes with the noun, e.g. in Finnish
vanho·i·lle mieh·i·lle "to old men" the plural
-i- and the case
-lle is added also to the adjective. • Use of a
copula verb like
on, e.g.
mies on vanha "the man
is old". • A tense system with present, preterite, perfect and pluperfect tenses. • The shift of the proto-Uralic locative *-nA and the ablative *-tA into new, cross-linguistically uncommon functions: the former becoming the
essive case, the latter the
partitive case. • This resulted in the rise of the
telicity contrast of the object, which must be in the
accusative case or partitive case. • The rise of two new series of
locative cases, the "inner locative" series marked by an element *-s-, and the "outer locative" marked by an element *-l-. • The
inessive *-ssA and the
adessive *-llA were based on the original Uralic locative *-nA, with the *n assimilated to the preceding consonant. • The
elative *-stA and the
ablative *-ltA similarly continue the original Uralic ablative *-tA. • The origin of the
illative *-sen and the
allative *-len is less clear. • The element *-s- in the first series has parallels across the other more western Uralic languages, sometimes resulting in formally identical case endings (e.g. an elative ending *-stē ← *-s-tA is found in the
Sámi languages, and *-stə ← *s-tA in the
Mordvinic languages), though its original function is unclear. • The *-l- in the 2nd series likely originates by way of affixation and
grammaticalization of the root *ülä- "above, upper" (cf. the prepositions *üllä ← *ül-nä "above", *ültä "from above"). ==See also==