Where does “eteo-” come from?

eteo- (English) comes from Ancient Greek ἐτεός, from Proto-Indo-European set- — stable, true.

eteo- (English): Denoting an ancient or ancestral language (or form of a language), dating from a time before it came into contact with another language; particularly one which had considerable influence, or which later displaced it entirely

Definitions

  1. Denoting an ancient or ancestral language (or form of a language), dating from a time before it came into contact with another language; particularly one which had considerable influence, or which later displaced it entirely

Ancestry of “eteo-”, step by step

StepLanguageWordMeaning
1Ancient Greekἐτεόςin accordance with reality or one's feelings:...
2Proto-Indo-Europeanset-stable, true

Words derived from “eteo-

Every word from Proto-Indo-European set-Every word from Ancient Greek ἐτεός