unauthorized

adjective

un·​au·​tho·​rized ˌən-ˈȯ-thə-ˌrīzd How to pronounce unauthorized (audio)
Synonyms of unauthorizednext
: not authorized : without authority or permission
an unauthorized biography
unauthorized communications
was unauthorized to act for her husband

Examples of unauthorized in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
An unauthorized person on the tracks of the Bay Area Rapid Transit train between the Coliseum and San Leandro stops caused major delays Saturday afternoon, the agency said. Caelyn Pender, Mercury News, 4 Apr. 2026 As a result, total net unauthorized immigration for 2025 reached -548,000, about 50% more than the Congressional Budget Office’s latest projection of -365,000. Jason Ma, Fortune, 4 Apr. 2026 Passengers who choose to use unauthorized services do so at their own risk. Ashley J. Dimella, FOXNews.com, 3 Apr. 2026 Rappa has been charged with two counts of embezzlement or misapplication by a fiduciary, two counts of larceny over $1,200, and the unauthorized practice of law. Riley Rourke, CBS News, 2 Apr. 2026 See All Example Sentences for unauthorized

Word History

First Known Use

1597, in the meaning defined above

Time Traveler
The first known use of unauthorized was in 1597

Browse Nearby Words

Cite this Entry

“Unauthorized.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unauthorized. Accessed 5 Apr. 2026.

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