Where does “tidlacad” come from?

tidlacad (Middle Irish) comes from Old Irish tindnacol, from Old Irish to-, 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.

Ancestry of “tidlacad”, step by step

StepLanguageWordMeaning
1Old Irishtindnacolgift, bestowing
2Old Irishto-prefix used to create verbs and associated verbal...
3Old Irishaith-re-; second, a further; ex-
4Proto-Celticati-re-, again, second, further
5Proto-Indo-Europeanétibeyond; over
6Proto-Indo-Europeanh₁éand, then
7Proto-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