Where does “aithreo” come from?

aithreo (Irish) comes from Irish ath-, from Old Irish aith-, from Proto-Celtic ati-, from Proto-Indo-European éti, from Proto-Indo-European h₁é, from Proto-Indo-European ǵʰe — Postpositional intensifying particle: indeed, at any rate, in fact.

aithreo (Irish): severe frost

Definitions

  1. severe frost

Ancestry of “aithreo”, step by step

StepLanguageWordMeaning
1Irishath-re-, second; old, rejected, ex-; return
2Old Irishaith-re-; second, a further; ex-
3Proto-Celticati-re-, again, second, further
4Proto-Indo-Europeanétibeyond; over
5Proto-Indo-Europeanh₁éand, then
6Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact
Every word from Proto-Indo-European ǵʰeEvery word from Proto-Indo-European h₁éEvery word from Proto-Indo-European éti