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Latin word auctoritas comes from Proto-Indo-European *h₂weg-, and later Proto-Italic *augeō (To enlarge. To increase.)
*h₂weg- (Proto-Indo-European)
*h₂owg-éye- (Proto-Indo-European)
*augeō (Proto-Italic)
To enlarge. To increase.
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.