Where does “εξουσία” come from?

εξουσία (Greek) comes from Ancient Greek ἐξουσία, from Ancient Greek ἐξόν, from Ancient Greek ἔξεστι, from Ancient Greek ἐστί, from Proto-Indo-European *h₁ésti.

εξουσία (Greek): authority, power the enforcement of rules etc

Definitions

authority, power the enforcement of rules etc

Ancestry of “εξουσία”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἐξουσία	power, means, license, or authority to do...
2	Ancient Greek	ἐξόν	—
3	Ancient Greek	ἔξεστι	it is possible, it is allowed
4	Ancient Greek	ἐστί	third-person singular present active indicative...
5	Proto-Indo-European	*h₁ésti	—

Every word from Proto-Indo-European *h₁ésti →Every word from Ancient Greek ἐστί →Every word from Ancient Greek ἔξεστι →