Proto-Slavic *dǫbъ

→ Belarusian дуб (inherited)

→ Bulgarian дъб (inherited)

→ Czech dub (inherited)

→ Czech doubí (inherited)

→ Old Church Slavonic дѫбъ (inherited)

→ Lower Sorbian dub (inherited)

→ Macedonian даб (inherited)

→ Polish dąb (inherited)

→ Polish Dąbrowski (mention)

→ Polabian dǫb (inherited)

→ Romanian Dâmbovița (derived)

→ Romanian dumbeț (derived)

→ Romanian Dâmbova (derived)

→ Russian дуб (inherited)

→ Russian дубрава (mention)

→ Serbo-Croatian dub (inherited)

→ Serbo-Croatian дуб (inherited)

→ Slovak dub (inherited)

→ Old Czech dub (inherited)