FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

exousia ἐξουσία — ex-oo-see'-ah — from 1832 (in the sense of ability); privilege, i.e. (subjectively) force, capacity, competency, freedom, or (objectively) mastery (concretely, magistrate, superhuman, potentate, token of control), delegated influence:--authority, jurisdiction, liberty, power, right, strength.

see GREEK for 1832