Where does “athraitheach” come from?

athraitheach (Irish) comes from Irish athraigh, from Middle Irish aithrigid, from Old Irish ad·eirrig, from Proto-Celtic regeti, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

athraitheach (Irish): changeable, movable, variable; variant

Definitions

  1. changeable, movable, variable; variant

Ancestry of “athraitheach”, step by step

athraitheach traces back through two separate lines of ancestry.

via Irish athraigh

StepLanguageWordMeaning
1Irishathraighchange, vary; change, alter; move
2Middle Irishaithrigidto change, alter, move
3Old Irishad·eirrigto repeat, reiterate; change; repeats,...
4Proto-Celticregetito stretch; to straighten
5Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

via Irish ách

StepLanguageWordMeaning
1IrisháchAlternative form of ach
2Old Irishachtbut; provided; inflection of aigid: ##...
3Proto-Celticextosexcept, but
4Proto-Indo-Europeaneǵʰsout; from, out of
Every word from Proto-Indo-European h₃reǵ-Every word from Proto-Celtic regetiEvery word from Old Irish ad·eirrig