Where does “teangeolaí” come from?

teangeolaí (Irish) comes from Irish teanga, from Old Irish tengae, from Proto-Celtic tangʷāt-, from Proto-Indo-European dn̥ǵʰwéh₂s — tongue.

teangeolaí (Irish): linguist

Definitions

Step	Language	Word	Meaning
1	Irish	teanga	tongue; language
2	Old Irish	tengae	tongue; language
3	Proto-Celtic	tangʷāt-	—
4	Proto-Indo-European	dn̥ǵʰwéh₂s	tongue

teangeolaí — Etymology, Origin & Word History | Etymology Explorer