Where does “Ἐτεόνικος” come from?

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

Ancestry of “Ἐτεόνικος”, step by step

Ἐτεόνικος traces back through two separate lines of ancestry.

via Ancient Greek ἐτεός

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

via Ancient Greek Νῑ́κη

StepLanguageWordMeaning
1Ancient GreekΝῑ́κη—
2Ancient Greekνῑ́κηconquered; victory
Every word from Proto-Indo-European set- →Every word from Ancient Greek ἐτεός →