Proto-Slavic *vъtorъ

→ Czech úterý (inherited)

→ Old Church Slavonic въторъ (inherited)

→ Lower Sorbian wałtora (derived)

→ Lithuanian antras (cognate)

→ Polish wtóry (inherited)

→ Polish wtórować (derived)

→ Polabian törĕ (inherited)

→ Russian второй (inherited)

→ Ukrainian повторити (inherited)

→ Ukrainian повторяти (inherited)