Proto-Indo-European *unt-

→ English ithe (derived)

→ Old English yþ (derived)

→ Catalan ona (derived)

→ Spanish onda (derived)

→ French onde (derived)

→ Icelandic unnur (derived)

→ Portuguese onda (derived)

→ Romanian undă (derived)

→ Old Portuguese onda (derived)

→ Yiddish אינד (inherited)