Where does “ieithyddiaeth” come from?

ieithyddiaeth (Welsh) comes from Welsh ieithydd, from Welsh iaith, from Middle Welsh ieith, from Proto-Brythonic jeiθ, from Proto-Celtic yextis, from Proto-Indo-European yek- — to utter.

ieithyddiaeth (Welsh): linguistics

Definitions

  1. linguistics

Ancestry of “ieithyddiaeth”, step by step

StepLanguageWordMeaning
1Welshieithyddlinguist; plural of iaith
2Welshiaithlanguage
3Middle Welshieith—
4Proto-Brythonicjeiθlanguage
5Proto-Celticyextislanguage, speech
6Proto-Indo-Europeanyek-to utter
Every word from Proto-Indo-European yek- →Every word from Proto-Celtic yextis →Every word from Proto-Brythonic jeiθ →