Icelandic regnbogi

← Proto-Germanic *regnabugô (inherited)

← Proto-Indo-European *bʰewgʰ- (root)

← Icelandic regn (affix)

← Icelandic bogi (affix)

← Old Norse regnbogi (inherited)

→ English rainbow (cognate)

→ Luxembourgish Reebou (cognate)