Where does “অতি” come from?

অতি (Bengali) comes from Sanskrit अति, from Proto-Indo-Aryan áti, from Proto-Indo-Iranian áti, 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 “অতি”, step by step

StepLanguageWordMeaning
1Sanskritअतिover-; beyond; excessively, exceedingly, very
2Proto-Indo-Aryanáti—
3Proto-Indo-Iranianátiover
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 ǵʰe →Every word from Proto-Indo-European h₁é →Every word from Proto-Indo-European éti →