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 edit

Etymology edit

From Proto-Balto-Slavic *sen, from Proto-Indo-European *swé; compare Latin . Cognate with Old Prussian sien (oneself).

Pronoun edit


  1. oneself: myself, yourself, himself, herself, itself (accusative)
  2. ourselves, yourselves, themselves (accusative)
  3. each other (accusative)

Declension edit

Descendants edit

  • East Slavic:
    • Old East Slavic: сѧ ()
      • Old Ruthenian: -сѧ (-sja), сѧ (sja)
        • Belarusian: -ся (-sja) (merges with final "-ць" into "-цца")
        • Ukrainian: -ся (-sja) (before consonants) / -сь (-sʹ) (before vowels, unless after most consonants)
      • Russian: -ся (-sja) (after consonants) / -сь (-sʹ) (after vowels)
      • Old Novgorodian: сѧ ()
  • South Slavic:
  • West Slavic:

Further reading edit

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