ˌən-ˈrēz-nə-bəl
1
as in irrational
having no basis in reason or fact
an unreasonable assumption
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in unreasoning
not using or following good reasoning
an unreasonable respect for a man who did not deserve it
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unreasonable
Not unreasonable, except that decision got caught in the cross wires, and by the time Ben brings up the family-style platters to the saloon, there are no plates at the table.
—
Rafaela Bassili, Vulture, 10 Feb. 2026
Officers also found evidence of severe rat and cockroach infestations and unreasonable delays in repairing common-area plumbing and leaking pipes.
—Ryan MacAsero, Mercury News, 10 Feb. 2026
Well, the Fourth Amendment protects all people, regardless of citizenship or national origin, from unreasonable search and seizure, so some of those collateral arrests are warrantless, but that's the politics of, of this funding bill.
—CBS News, 8 Feb. 2026
The Fourth Amendment protects people against unreasonable searches and seizures.
—Eve Chen, USA Today, 6 Feb. 2026
See All Example Sentences for unreasonable
Rafaela Bassili, Vulture, 10 Feb. 2026
Officers also found evidence of severe rat and cockroach infestations and unreasonable delays in repairing common-area plumbing and leaking pipes.
—Ryan MacAsero, Mercury News, 10 Feb. 2026
Well, the Fourth Amendment protects all people, regardless of citizenship or national origin, from unreasonable search and seizure, so some of those collateral arrests are warrantless, but that's the politics of, of this funding bill.
—CBS News, 8 Feb. 2026
The Fourth Amendment protects people against unreasonable searches and seizures.
—Eve Chen, USA Today, 6 Feb. 2026
See All Example Sentences for unreasonable
Recent Examples of Synonyms for unreasonable
Adjective
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Away from the irrational exuberance, there are still sensible investments to be made.—
Mikael Johnsson,
Fortune,
6 Feb. 2026
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The move would be both economically irrational and morally obtuse.—
Ruth Jean-Marie,
Time,
3 Feb. 2026
Adjective
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Bainbridge knew about secrets and unreasoning shame.—
Christopher Tayler,
Harpers Magazine,
27 Jan. 2026
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Let sound political prescience but take the place of an unreasoning prejudice, and this will be done.—
Frederick Douglass,
The Atlantic,
16 Aug. 2017
Adjective
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Deputy Attorney General Todd Blanche fired back at Massie's claims of unwarranted redactions.—
John Parkinson,
ABC News,
10 Feb. 2026
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Even for a guy like AJ, that stuff is unwarranted.—
Dallas Morning News,
Dallas Morning News,
5 Feb. 2026
Adjective
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Nelly herself is heavily reinterpreted by Fennell, imagined in this film as the illegitimate daughter of an aristocrat who serves as Cathy’s maid; the film also runs with modern readings of her character as a more proactive meddler in the doomed love between the main characters.—
Wilson Chapman,
IndieWire,
13 Feb. 2026
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Advertisement Played by Vietnamese American actor Hong Chau, the Nelly of Fennell's film is reframed as the illegitimate daughter of a lord, and she is directly involved in the misunderstandings that drive the movie's central tragedies.—
Megan McCluskey,
Time,
13 Feb. 2026
Adjective
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Mafi, of Garden Grove Unified, suggested that fear isn’t unfounded.—
Andre Mouchard,
Oc Register,
15 Feb. 2026
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This is spurious and completely unfounded.—
Letters to the Editor,
The Orlando Sentinel,
14 Feb. 2026
Adjective
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There are so many reasons to be mad; the mostly baseless and endless attacks on higher education, the dismantling of life-saving research, ICE, the subverting of policy that redresses shameful social harms.—
Wendy Nelson Espeland,
Mercury News,
11 Feb. 2026
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The Talmud teaches that Jerusalem was destroyed not only because of hatred, but because of sinat chinam, baseless hatred fueled by moral absolutism.—
Rabbi Bruce D. Forman,
Sun Sentinel,
10 Feb. 2026
Adjective
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But multiple flood events over the decades have continued to erode the older infrastructure, leaving parts of it unsupported.—
Dante Motley,
Austin American Statesman,
11 Feb. 2026
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But among the litany of possible adverse health outcomes listed, a new analysis in The Lancet published Thursday finds that 62 of those 66 risks are unsupported by reliable evidence.—
Elizabeth Cooney,
STAT,
5 Feb. 2026
Adjective
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The warrant for Silva-Parucho, a construction worker with a pending asylum application and valid employment authorization, was therefore invalid, the judge ruled.—
Cristóbal Reyes,
The Orlando Sentinel,
13 Feb. 2026
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Both parties claim problems such as invalid signatures and missing or incorrect voter information on petitions that judicial candidates submit to secure a place on the ballot.—
Kamal Morgan,
Fort Worth Star-Telegram,
10 Feb. 2026
Cite this Entry
“Unreasonable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unreasonable. Accessed 17 Feb. 2026.
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