Proto-Slavic *zъlъ

→ Belarusian злы (inherited)

→ Bulgarian зъл (inherited)

→ Czech zlý (inherited)

→ Old Church Slavonic зълъ (inherited)

→ Lower Sorbian zły (inherited)

→ Upper Sorbian zły (inherited)

→ Macedonian зло (inherited)

→ Macedonian зол (inherited)

→ Polish zły (inherited)

→ Russian злой (inherited)

→ Russian зло (derived)

→ Russian злоба (affix)

→ Serbo-Croatian zao (inherited)

→ Serbo-Croatian зао (inherited)

→ Slovak zlý (inherited)

→ Slovene zel (inherited)

→ Ukrainian злий (inherited)

→ Old Czech zlý (inherited)