Proto-Slavic *otьcь

→ Belarusian айцец (inherited)

→ Bulgarian отец (inherited)

→ Czech otec (inherited)

→ Kashubian òjc (inherited)

→ Old Church Slavonic отьць (inherited)

→ Lower Sorbian wóśc (inherited)

→ Upper Sorbian wótc (inherited)

→ Macedonian отец (inherited)

→ Old East Slavic отьць (inherited)

→ Polish ojciec (inherited)

→ Romanian ocină (mention)

→ Romanian Ocinaș (derived)

→ Russian отец (inherited)

→ Serbo-Croatian otec (inherited)

→ Serbo-Croatian otac (inherited)

→ Serbo-Croatian отац (inherited)

→ Slovak otec (inherited)

→ Slovene oče (inherited)

→ Ukrainian отець (inherited)

→ Old Novgorodian отьць (inherited)

→ Old Polish ociec (inherited)