Proto-Slavic *dьlgъ

→ Belarusian доўгі (inherited)

→ Bulgarian дълъг (inherited)

→ Czech dlouhý (inherited)

→ Lower Sorbian dłujki (inherited)

→ Upper Sorbian dołhi (inherited)

→ Macedonian долг (inherited)

→ Macedonian должи (mention)

→ Polish długi (inherited)

→ Polish Dowhan (derived)

→ Polish Dowhań (derived)

→ Polish Dołhań (derived)

→ Polish Dołhan (derived)

→ Polish Dołgan (derived)

→ Polish Dołgań (derived)

→ Russian долгий (inherited)

→ Russian долгота (mention)

→ Rusyn довгый (inherited)

→ Serbo-Croatian dug (inherited)

→ Serbo-Croatian дуг (inherited)

→ Slovak dlhý (inherited)

→ Slovene dolg (inherited)

→ Ukrainian довгий (inherited)

→ Old Czech dlúhý (inherited)