Proto-Slavic *vyknǫti

→ Czech zvyk (derived)

→ Old Church Slavonic вꙑкнѫти (inherited)

→ Lower Sorbian wuknuś (inherited)

→ Russian обычный (mention)

→ Russian обычай (mention)

→ Russian -выкнуть (inherited)

→ Serbo-Croatian naviknuti (derived)

→ Serbo-Croatian навикнути (derived)

→ Old Polish wyknąć (inherited)