Proto-Slavic *sǫpъ

→ Czech sup (inherited)

→ Kashubian sãp (inherited)

→ Old Church Slavonic сѫпъ (inherited)

→ Lower Sorbian sup (inherited)

→ Polish sęp (inherited)

→ Polish Sip (derived)

→ Polish Syp (derived)

→ Serbo-Croatian sup (inherited)

→ Serbo-Croatian суп (inherited)

→ Slovak sup (inherited)