UNAUTHORIZED Synonyms: 91 Similar and Opposite Words

unauthorized

adjective

Definition of unauthorized

as in improper

without permission; not authorized an unauthorized use of government vehicles Unauthorized personnel are not allowed in the building.

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Example Sentences

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.

Recent Examples of unauthorized Trump sued his own Internal Revenue Service over the unauthorized release of his tax returns — and then, before the case could even be heard on the merits, his Justice Department settled it on his behalf. — Lynn Schmidt, Mercury News, 2 July 2026 The July 2 decree said the two bishops leading the unauthorized ordination, held in Switzerland on July 1, had been excommunicated, along with the four priests who had become new bishops, which was widely expected. — Joshua McElwee, USA Today, 2 July 2026 The property owners allegedly violated their loan agreement by entering into an unauthorized lease with a property manager without the bank’s consent, causing the property to deteriorate dramatically. — Taylor O'Connor, Kansas City Star, 2 July 2026 Since the grand jury’s last examination in 2023, the county has achieved state licensing for the homes and started providing the public and Board of Supervisors data on the hundreds of unauthorized absences per quarter, the report found. — Theresa Clift july 2, Sacbee.com, 2 July 2026 See All Example Sentences for unauthorized

Recent Examples of Synonyms for unauthorized

Adjective

Also requested were documents related to a lawsuit, recently settled for $135,000, claiming Kramer had given an improper assessment of a property and retaliated against an employee who complained.

— Jakob Rodgers, Mercury News, 7 July 2026
Thus, the LLCs asserting objections to the alter ego findings as to the trusts were improper.

— Jay Adkisson, Forbes.com, 7 July 2026

Definition of improper

Adjective

As a result, the bill would leave parts of the crypto ecosystem vulnerable to exploitation by terrorists, sanctions evaders, fraudsters, and other illicit actors under the guise of technological neutrality.

— Richard Nephew, Fortune, 2 July 2026
Though the film ends with Lori and John getting married (despite Ted's various illicit shenanigans), Ted 2 reveals that the pair have divorced.

— Brianna Zigler, Entertainment Weekly, 1 July 2026

Definition of illicit

Adjective

Kayden Bordley, 19, faces one count each of second-degree murder and unlawful use of a weapon, and two counts of armed criminal action, according to a Jackson County charging document.

— Caroline Zimmerman, Kansas City Star, 7 July 2026
The hours-long pandemonium involved some teenaged children and young adults throwing mortars, fireworks and more at those who crowded about and at police officers, a grocery store getting merchandise stolen and an unlawful assembly declared.

— Sierra van der Brug, Oc Register, 6 July 2026

Definition of unlawful

Adjective

In some countries, such as Japan, tipping can even be viewed as awkward, inappropriate, and unnecessary as patrons eat, pay the bill, and simply leave.

— Doug Melville, Forbes.com, 7 July 2026
Some commenters felt the post was cringeworthy and inappropriate.

— Richard Johnson, New York Daily News, 5 July 2026

Definition of inappropriate

Adjective

In their grievance letter, the detainees called the markups an unacceptable business practice with no apparent limit.

— Andrea Castillo, Los Angeles Times, 1 July 2026
Overt racial prejudice, long considered socially unacceptable, is increasingly visible in public life, marking a shift from previously subtle forms.

— Maia Niguel Hoskin, Forbes.com, 30 June 2026

Definition of unacceptable

Adjective

That difference suggests that the government sees this extension of patent rights as an illegitimate way for a company to exclude other companies from competing.

— Julie Dawson, The Conversation, 23 June 2026
Some fraudsters run an illegitimate DME company and get a doctor to prescribe the equipment.

— Janice Neumann, Chicago Tribune, 16 June 2026

Definition of illegitimate

Browse Nearby Words

unauthentic

unauthorized

unavailability

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“Unauthorized.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unauthorized. Accessed 8 Jul. 2026.

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Synonyms of unauthorized

adjective

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