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[aw-thuh-rahyz] /ˈɔ θəˌraɪz/
verb (used with object), authorized, authorizing.
to give authority or official power to; empower:
to authorize an employee to sign purchase orders.
to give authority for; formally sanction (an act or proceeding):
Congress authorized the new tax on tobacco.
to establish by authority or usage:
an arrangement long authorized by etiquette books.
to afford a ground for; warrant; justify.
Also, especially British, authorise.
Origin of authorize
1350-1400; earlier auctorize < Medieval Latin auctōrizāre; replacing Middle English autorisen < Middle French autoriser < Medieval Latin See author, -ize
Related forms
authorizable, adjective
authorizer, noun
deauthorize, verb (used with object), deauthorized, deauthorizing.
misauthorize, verb (used with object), misauthorized, misauthorizing.
preauthorize, verb (used with object), preauthorized, preauthorizing.
reauthorize, verb (used with object), reauthorized, reauthorizing.
self-authorizing, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for deauthorize


verb (transitive)
to confer authority upon (someone to do something); empower
to permit (someone to do or be something) with official sanction: a dealer authorized by a manufacturer to retail his products
Derived Forms
authorization, authorisation, noun
authorizer, authoriser, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for deauthorize



"give formal approval to," late 14c., autorisen, from Old French autoriser "authorize, give authority to" (12c.), from Medieval Latin auctorizare, from auctor (see author (n.)). Modern spelling from 16c. Related: Authorized; authorizing.

Online Etymology Dictionary, © 2010 Douglas Harper
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