Reconstruction:Proto-Slavic/o(b)soka

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

Action noun of *o(b)sočiti (“to charge, to focus around”), from *ob- +‎ *sočiti + *-a.

Noun

*o(b)soka f

charge (including legally)
(by abstraction) → legal query
focus, round-up
(by extension) → summary

Alternative forms

*o(b)sokъ m

Declension

Declension of *o(b)soka (hard a-stem)
	singular	dual	plural
nominative	*o(b)soka	*o(b)socě	*o(b)soky
genitive	*o(b)soky	*o(b)soku	*o(b)sokъ
dative	*o(b)socě	*o(b)sokama	*o(b)sokamъ
accusative	*o(b)sokǫ	*o(b)socě	*o(b)soky
instrumental	o(b)sokojǫ, o(b)sokǫ^**	*o(b)sokama	*o(b)sokami
locative	*o(b)socě	*o(b)soku	o(b)sokasъ, o(b)sokaxъ^*
vocative	*o(b)soko	*o(b)socě	*o(b)soky

^* -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

*posoka (“direction”)
*nasoka (“guideline; instigation”)

Descendants

East Slavic:
- Old East Slavic: осока (osoka)
- Belarusian: асо́ка (asóka)
South Slavic:
- Serbo-Croatian:
  Cyrillic script: опсок
  
  Latin script: opsok
- Slovene: óbsok
West Slavic:
- Polish: osoka (“summary”) (rare)