Proto-Slavic *smьjati

→ Belarusian смяяцца (inherited)

→ Bulgarian смея се (inherited)

→ Czech smát (inherited)

→ Old Church Slavonic смиꙗти (inherited)

→ Lower Sorbian smjaś (inherited)

→ Polish śmiać (inherited)

→ Russian смеяться (inherited)

→ Russian смея (inherited(ru/bg))

→ Slovak smiať sa (inherited)

→ Slovene smejati (inherited)

→ Ukrainian сміятися (inherited)