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English word authority comes from Latin augeo (exalt, praise) and later Latin auctoritas (influence, authority, prestige)
augeo (Latin)
(figuratively) I exalt, praise. I enlarge, spread, expand. I exaggerate. I honor, enrich. I increase, augment. I lengthen.
auctus (Latin)
Ample. Enlarged. Enriched.
auctor (Latin)
(Medieval Latin) one who gives increase (hence: an originator, causer, doer, founder). (figuratively) authorship, agency, encouragement. (poetic) the Creator, God. Author. Seller, vendor.
auctoritas (Latin)
Influence, authority, prestige, reputation. Influential person. Legal title. Power conferred, decree, order, rights, command. Responsibility, opinion, judgment. Sanction, political sanction. Support, backing. Warrant.
auctorité (Old French)
autorite (Middle English)
authority (English)
(countable) A person accepted as a source of reliable information on a subject.. (uncountable) The power to enforce rules or give orders.. (used in singular or plural form) Persons in command; specifically, government.. Government-owned agency which runs a revenue-generating activity.