Proto-Slavic *širokъ

→ Belarusian шырокі (inherited)

→ Czech široký (inherited)

→ Old Church Slavonic широкъ (inherited)

→ Lower Sorbian šyroki (inherited)

→ Macedonian широк (inherited)

→ Polish szeroki (inherited)

→ Polabian sarĕk (inherited)

→ Russian широкий (inherited)

→ Rusyn шырокый (inherited)

→ Serbo-Croatian širok (inherited)

→ Serbo-Croatian широк (inherited)

→ Serbo-Croatian široko (inherited)

→ Slovene širok (inherited)

→ Ukrainian широкий (inherited)