Reconstruction:Proto-Slavic/soja

This Proto-Slavic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.

Proto-Slavic

Etymology

From *sojь (“shaded; blue”) +‎ *-а, from Proto-Balto-Slavic *śájas, from Proto-Indo-European *(s)ḱéh₃-yo-s, from *(s)ḱeh₃- (“shadow”) +‎ *-yós, cognate with Proto-Celtic *skātos (“shadow”), Proto-Germanic *hēwijaz (“dark blue”). Alternatively from Proto-Indo-European *(s)ḱeh₁y- (“to shine, shimmer”)[1][2].

Noun

*sòja f[3]

jay

Declension

Declension of *soja (soft a-stem)

	Singular	Dual	Plural
Nominative	*soja	*soji	*soję̇
Accusative	*sojǫ	*soji	*soję̇
Genitive	*soję̇	*soju	*sojь
Locative	*soji	*soju	sojasъ, sojaxъ^*
Dative	*soji	*sojama	*sojamъ
Instrumental	sojejǫ, sojǫ^**	*sojama	*sojami
Vocative	*soje	*soji	*soję̇

^* -asъ is the expected Balto-Slavic form but is found only in some Old Czech documents; -axъ is found everywhere else and is formed by analogy with other locative plurals in -xъ.
^** The second form occurs in languages that contract early across /j/ (e.g. Czech), while the first form occurs in languages that do not (e.g. Russian).

Related terms

*sojьka
*osojь (“shady place”)
*sěnь (“shadow”)
*sivъ, *śěrъ, *śědъ (“gray”)

Descendants

East Slavic:
- Old East Slavic: соя (soja)
  - Belarusian: со́я (sója)
  - Russian: со́я (sója)
  - Ukrainian: со́я (sója)
South Slavic:
- Bulgarian: со́а (sóa) (dialectal, from an earlier *соя)
- Slovene: šọ́ja
West Slavic:
- Czech: sоjа (dialectal)
- Polish: sоjа (dialectal)
- Slovak: sоjа (dialectal)
- Sorbian:
  - Upper Sorbian: soja
  - Lower Sorbian: soja

References

Vasmer, Max (1964–1973), “соя”, in Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), transl. and suppl. by Oleg Trubachyov, Moscow: Progress
Todorov T., editor (2010), “со̀а⁵”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 7, Sofia: Bulgarian Academy of Sciences, page 261
Snoj, Marko (2016), “šója”, in Slovenski etimološki slovar³ (in Slovene), https://fran.si: “*sòja”

[1] Vasmer, Max (1964–1973), “соя”, in Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), transl. and suppl. by Oleg Trubachyov, Moscow: Progress

[2] Todorov T., editor (2010), “со̀а⁵”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 7, Sofia: Bulgarian Academy of Sciences, page 261

[3] Snoj, Marko (2016), “šója”, in Slovenski etimološki slovar³ (in Slovene), https://fran.si: “*sòja”