unauthorized
Americanadjective
-
lacking permission; unsanctioned.
unauthorized access.
-
lacking proper immigration or working papers: an unauthorized immigrant.
an unauthorized worker;
an unauthorized immigrant.
adjective
Sensitive Note
See illegal alien.
Etymology
Origin of unauthorized
First recorded in 1595–1600; un- 1 ( def. ) + authorized ( def. )
Explanation
If something is officially not approved, it's unauthorized. An unauthorized biography is written without the consent or cooperation of its subject. If a person lacks the authority to do something, you can describe them as unauthorized: "Sorry, I'm unauthorized to let you into the secret clubhouse." Otherwise, this adjective means "not permitted." Many unauthorized things are also illegal, like an online company's unauthorized use of personal information. To authorize is to give approval.
Vocabulary lists containing unauthorized
No Talking
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Novel Study: Their Eyes Were Watching God, Chapters 7–15
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Onyeka and the Academy of the Sun
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If you do discover an unauthorized charge on your debit card, notifying your bank or credit union within two business days of noticing the fraud caps your maximum liability at $50.
From MarketWatch ● Jul. 30, 2026
An unauthorized, but high-quality, copy of the Christopher Nolan hit film ‘The Odyssey’ was leaked online.
From Los Angeles Times ● Jul. 29, 2026
Someone was getting unauthorized access to some of its systems.
From The Wall Street Journal ● Jul. 24, 2026
The brief says the Centers for Medicare & Medicaid Services, the federal agency that oversees Medicare, Medicaid and the ACA marketplaces, canceled 250,000 unauthorized enrollments and identified 200,000 unauthorized plan switches in 2025.
From Salon ● Jul. 19, 2026
The resurrection of Malcolm X also precipitated a new wave of unauthorized exploitation of his image.
From "The Autobiography of Malcolm X" by Alex Malcolm X;Hailey
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
