вз-

• вс- (vs-) — before a voiceless consonant
• взо- (vzo-) — before certain consonant clusters

Proto-Slavic *vъz-, from Proto-Balto-Slavic *uź-. Cognate with Lithuanian už (“within, instead of, in return for”), Latvian uz (“on, to”). Further etymology disputed. Compare also воз- (voz-), a borrowing from Old Church Slavonic.

• IPA^(key): [vz]

вз- • (vz-)

1. (used with verbs) upwards, up

   ‎взо- (vzo-) + ‎-йти́ (-jtí, “to go”) → ‎взойти́ (vzojtí, “to rise, to ascend”)

   ‎вс- (vs-) + ‎ки́нуть (kínutʹ, “to throw, cast, fling”) → ‎вски́нуть (vskínutʹ, “to throw up, to toss up”)

2. (used with verbs) returning, re-