Where does “Hadyás” come from?

Hadyás (Proto-Indo-Aryan) comes from Proto-Indo-Iranian Hadyás, from Proto-Indo-European h₁e-dy-és, from Proto-Indo-European h₁é, from Proto-Indo-European ǵʰe — Postpositional intensifying particle: indeed, at any rate, in fact.

Ancestry of “Hadyás”, step by step

StepLanguageWordMeaning
1Proto-Indo-IranianHadyás—
2Proto-Indo-Europeanh₁e-dy-és—
3Proto-Indo-Europeanh₁éand, then
4Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact
Every word from Proto-Indo-European ǵʰe →Every word from Proto-Indo-European h₁é →Every word from Proto-Indo-European h₁e-dy-és →