Authorize
late Middle English: from Old French autoriser, from medieval Latin auctorizare, from auctor ‘originator, promoter’ (see author).
wiktionary
From Middle English auctorisen, from Old French auctorisier, from Medieval Latin auctorizare, from Latin auctor. See author about the orthography with <h>. Doublet of octroy.
etymonline
authorize (v.)
late 14c., auctorisen, autorisen, "give formal approval or sanction to," also "confirm as authentic or true; regard (a book) as correct or trustworthy," from Old French autoriser, auctoriser "authorize, give authority to" (12c.) and directly from Medieval Latin auctorizare, from auctor (see author (n.)). Meaning "give authority or legal power to" is from mid-15c. Modern spelling from late 16c. Related: Authorized; authorizing. Authorized Version as a popular name for the 1611 ("King James") English Bible is by 1811.
