Where does “ettech” come from?

ettech (Old Irish) comes from Old Irish ette, from Proto-Celtic ɸettiyā, from Proto-Celtic ɸeteti, from Proto-Indo-European péth₂eti, from Proto-Indo-European peth₂- — to spread out; to fly.

Ancestry of “ettech”, step by step

StepLanguageWordMeaning
1Old Irishettewing, pinion; fin; feather, plume
2Proto-Celticɸettiyā
3Proto-Celticɸetetito fly
4Proto-Indo-Europeanpéth₂etito fly
5Proto-Indo-Europeanpeth₂-to spread out; to fly

Words derived from “ettech

Every word from Proto-Indo-European peth₂-Every word from Proto-Indo-European péth₂etiEvery word from Proto-Celtic ɸeteti