Proto-Slavic *vьlkolakъ

→ Belarusian ваўкалак (inherited)

→ Czech vlkodlak (inherited)

→ Greek βρικόλακας (derived)

→ Lithuanian vilkolakis (cognate)

→ Macedonian врколак (inherited)

→ Polish wilkołak (inherited)

→ Russian волкулак (inherited)

→ Serbo-Croatian vukodlak (inherited)

→ Serbo-Croatian вукодлак (inherited)

→ Slovak vlkolak (inherited)

→ Slovene volkodlak (inherited)