Proto-Slavic *glupъ

→ Bulgarian глуп (inherited)

→ Czech hloupý (inherited)

→ Old Church Slavonic глоупъ (inherited)

→ Lower Sorbian głupy (inherited)

→ Macedonian глуп (inherited)

→ Polish głupi (inherited)

→ Russian глупый (inherited)

→ Serbo-Croatian glup (inherited)

→ Serbo-Croatian глуп (inherited)

→ Slovak hlúpy (inherited)

→ Slovene glup (inherited)

→ Ukrainian глупий (inherited)

→ Old Polish głupy (inherited)