Russian

Alternative forms

• -сь ‎(-sʹ) (after vowels)

Suffix

-ся • ‎(-sja)

1. Reflexive suffix appended to finite verbs and infinitives to make a reflexive, reciprocal, intransitive or passive verb.

Usage notes

• After a vowel, -ся is usually contracted to -сь, except when attached to an adjectival participle:
  • мы́ться ‎(mýtʹsja, “to wash oneself”), мо́ется ‎(mójetsja, “[he] washes himself”)
  • мо́юсь ‎(mójusʹ, “[I] wash myself”)
  • мы́вшаяся ‎(mývšajasja, “[who had] washed herself”).
• When affixed to an infinitive -ть ‎(-tʹ) or the 3rd-person singular or plural -т ‎(-t), it merges with the /t/ into the affricate /ts/ and palatalization is lost: [tsə].

See also