ἐξουσία
exousía
ex-oo-see'-ah
from ἔξεστι (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.

KJV translates as: authority, jurisdiction, liberty, power, right, strength