Proto-Slavic *radъ

→ Bulgarian рад (inherited)

→ Bulgarian Рада (derived)

→ Czech rád (inherited)

→ Lower Sorbian rad (inherited)

→ Polish rad (inherited)

→ Romanian Radu (derived)

→ Romanian Răducanu (derived)

→ Russian радуга (inherited)

→ Russian рад (inherited)

→ Serbo-Croatian rad (inherited)

→ Serbo-Croatian рад (inherited)

→ Serbo-Croatian Radič (derived)

→ Slovak Radoslav (derived)

→ Slovak rád (inherited)

→ Slovene rad (inherited)

→ Ukrainian радий (inherited)

→ Ukrainian райдуга (inherited)