Welsh tafod

← Proto-Brythonic *tavọd (inherited)

← Proto-Celtic *tangʷāt- (inherited)

← Proto-Indo-European *dn̥ǵʰwéh₂s (inherited)

← Cornish taves (cognate)

← Old Irish tengae (cognate)

← Middle Welsh tauaut (inherited)

→ Old English tunge (cognate)

→ Breton teod (cognate)

→ Welsh tafodiaith (compound)

→ German Zunge (cognate)

→ Irish teanga (cognate)

→ Gothic 𐍄𐌿𐌲𐌲𐍉 (cognate)

→ Cornish taves (cognate)

→ Norwegian Nynorsk tunge (cognate)

→ Old Irish tengae (cognate)