Etymology

From Proto-Albanian *eta, related to the isolated group (substrate) of Greek ἐτεός ‎(ἐteós, “true, real”), ἐτάζω ‎(ἐtázo, “to test”)^[1]. Related to the participial form of jam and to eshë ‎(“period of time, span, space”). See also Latin aetas, considered by some to be the source of the Albanian word^[2], but this is uncertain.