Where does “au” come from?

au (Proto-Balto-Slavic) comes from Proto-Indo-European h₂ew, from Proto-Indo-European ǵʰe — Postpositional intensifying particle: indeed, at any rate, in fact.

Ancestry of “au”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanh₂ewaway from, off; again
2Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact

Words derived from “au”

Every word from Proto-Indo-European ǵʰe →Every word from Proto-Indo-European h₂ew →