Etymology

From Proto-Indo-European *h₂ow-, *h₂ew- ‎(“to see, perceive”), with the regular loss of a laryngeal before *h₂. Cognates include Ancient Greek αἰσθάνομαι ‎(aisthánomai, “to perceive”), Latin audiō ‎(“I hear, listen”) and Sanskirt आविस् ‎(āvís, “openly, manifestly, evidently”).