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unauthorized

[uhn-aw-thuh-rahyzd]
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adjective
  1. lacking permission; unsanctioned: unauthorized access.
  2. lacking proper immigration or working papers: an unauthorized worker;an unauthorized immigrant.
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Origin of unauthorized

First recorded in 1595–1600; un-1 + authorized

Usage note

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for unauthorized

unauthorized

unauthorised

adjective
  1. not having official permission
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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

Word Origin and History for unauthorized

adj.

1590s, from un- (1) "not" + past participle of authorize.

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Online Etymology Dictionary, © 2010 Douglas Harper