Proto-Slavic *rajь

→ Belarusian рай (inherited)

→ Bulgarian рай (inherited)

→ Czech ráj (inherited)

→ Old Church Slavonic раи (inherited)

→ Macedonian рај (inherited)

→ Polish raj (inherited)

→ Romanian rai (derived)

→ Russian радуга (inherited)

→ Russian рай (inherited)

→ Sanskrit रयि (cognate)

→ Serbo-Croatian raj (inherited)

→ Serbo-Croatian рај (inherited)

→ Ukrainian рай (inherited)

→ Ukrainian райдуга (inherited)