G1849 ἐξουσία (exousía)

KJV renderings: authority, jurisdiction, liberty, power, right, strength
Strong's definition: privilege, i.e. (subjectively) force, capacity, competency, freedom, or (objectively) mastery (concretely, magistrate, superhuman, potentate, token of control), delegated influence
Derivation: from G1832 (ἔξεστι) (in the sense of ability);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.