Russian радуга

← Proto-Germanic *tunglą (cognate)

← Proto-Indo-European *denǵʰ- (mention)

← Lithuanian dangùs (cognate)

← Proto-Slavic *radǫga (inherited)

← Proto-Slavic *radъ (inherited)

← Proto-Slavic *rajь (inherited)

← Proto-Slavic *dǫga (inherited)

← Ukrainian ра́йдуга (cognate)