Proto-Slavic *svojь

→ Belarusian свой (inherited)

→ Bulgarian свой (inherited)

→ Czech svůj (inherited)

→ Old Church Slavonic свои (inherited)

→ Lower Sorbian swój (inherited)

→ Lower Sorbian swójźba (mention)

→ Upper Sorbian swój (inherited)

→ Lithuanian savo (cognate)

→ Macedonian свој (inherited)

→ Old Norse sveinn (cognate)

→ Polish swój (inherited)

→ Russian свой (inherited)

→ Serbo-Croatian svoj (inherited)

→ Serbo-Croatian свој (inherited)

→ Slovak svoj (inherited)

→ Slovene svoj (inherited)

→ Ukrainian свій (inherited)