Reconstruction:Proto-Slavic/čistostь

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

Etymology tree

Proto-Indo-European *sek-?

Proto-Indo-European *-éyti

Proto-Indo-European *skey-

Proto-Indo-European *skeyd-

Proto-Indo-European *-tós

Proto-Indo-European *skidtós

Proto-Balto-Slavic *skī́ˀstas

Proto-Slavic *čistъ

Proto-Indo-European *-Hostis

Proto-Balto-Slavic *-astis

Proto-Slavic *-ostь

Proto-Slavic *čistostь

From *čistъ (“clean, pure”) +‎ *-ostь (“-ness”).

Noun

*čistostь f

Declension

Declension of *čistostь (i-stem, uncountable)
	singular
nominative	*čistostь
genitive	*čistosti
dative	*čistosti
accusative	*čistostь
instrumental	čistostьjǫ, čistosťǫ^*
locative	*čistosti
vocative	*čistosti

^* 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).

Synonyms

*čistota

Descendants

East Slavic:
- Old East Slavic: чистость (čistostĭ)
  - Belarusian: чы́стасць (čýstascʹ)
  - Russian: чи́стость (čístostʹ) (rare)
  - Ukrainian: чи́стість (čýstistʹ)
South Slavic:
- Old Church Slavonic:
  Cyrillic: чистость (čistostĭ)
  
  Glagolitic: ⱍⰺⱄⱅⱁⱄⱅⱐ (čistostĭ)
- Serbo-Croatian:
  Cyrillic script: чи̏сто̄ст
  
  Latin script: čȉstōst
- Slovene: čístost
West Slavic:
- Czech: čistost
- Polish: czystość
- Slovak: čistosť (archaic)
- Sorbian:
  - Upper Sorbian: čistosć
  - Lower Sorbian: cystosć

References

Trubachyov, Oleg, editor (1977), “*čistostь”, in Этимологический словарь славянских языков [Etymological dictionary of Slavic languages] (in Russian), numbers 4 (*čaběniti – *děľa), Moscow: Nauka, page 120
Sławski, Franciszek, editor (1976), “*čistostь”, in Słownik prasłowiański [Proto-Slavic Dictionary] (in Polish), volume 2 (caca – davьnota), Wrocław: Ossolineum, page 211