Where does “adolygiadau” come from?

adolygiadau (Welsh) comes from Welsh adolygiad, from Welsh adolygu, from Welsh ad-, from Proto-Brythonic ate-, 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.

Ancestry of “adolygiadau”, step by step

StepLanguageWordMeaning
1Welshadolygiadreview
2Welshadolyguto review
3Welshad-again, back, re-; affirmative prefix, emphasises...
4Proto-Brythonicate-
5Proto-Celticati-re-, again, second, further
6Proto-Indo-Europeanétibeyond; over
7Proto-Indo-Europeanh₁éand, then
8Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact
Every word from Proto-Indo-European ǵʰe