ˌən-ˈrēz-nə-bəl
1
as in irrational
having no basis in reason or fact
an unreasonable assumption
Synonyms & Similar Words
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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
No matter their legal status, everyone is entitled to protection from unreasonable search and seizure and excessive use of force under the US Constitution’s Fourth Amendment, said Jenn Borchetta, deputy director of the ACLU’s Criminal Law Reform Project.
—
Chelsea Bailey, CNN Money, 23 Aug. 2025
California law requires parole to be granted if the individual is no longer considered an unreasonable danger to the public.
—Amanda Castro
hannah Parry, MSNBC Newsweek, 22 Aug. 2025
The complaints also said Streich failed to act competently, failed to return the client's property, charged unreasonable fees and provided false information to the Board of Professional Responsibility.
—Kirsten Fiscus, Nashville Tennessean, 20 Aug. 2025
There are ways to encourage tenants to be good neighbors without being unreasonable or punitive.
—Kelly G. Richardson, San Diego Union-Tribune, 19 Aug. 2025
See All Example Sentences for unreasonable
Chelsea Bailey, CNN Money, 23 Aug. 2025
California law requires parole to be granted if the individual is no longer considered an unreasonable danger to the public.
—Amanda Castro
hannah Parry, MSNBC Newsweek, 22 Aug. 2025
The complaints also said Streich failed to act competently, failed to return the client's property, charged unreasonable fees and provided false information to the Board of Professional Responsibility.
—Kirsten Fiscus, Nashville Tennessean, 20 Aug. 2025
There are ways to encourage tenants to be good neighbors without being unreasonable or punitive.
—Kelly G. Richardson, San Diego Union-Tribune, 19 Aug. 2025
See All Example Sentences for unreasonable
Recent Examples of Synonyms for unreasonable
Adjective
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Maura’s performance makes Maria Angeles so magnetic and eccentric — earthily practical on some matters, dizzily irrational on others, and sympathetically true to herself on all fronts — that all the film’s other players want for detail and texture by comparison.—
Guy Lodge,
Variety,
4 Sep. 2025
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The roll call of people across the decades who have had access to nuclear weapons includes many who are considerably less rational than the irrational rest of us.—
Rivka Galchen,
New Yorker,
2 Sep. 2025
Adjective
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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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Negative reviews can heavily influence the purchasing decisions of readers, librarians, teachers, and booksellers, even if the accusations in those reviews are unfair and unwarranted.—
Kevin Dickinson,
Big Think,
2 Sep. 2025
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Levying unwarranted taxes can have negative impacts on a jurisdiction.—
Nathan Goldman,
Forbes.com,
1 Sep. 2025
Adjective
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What the rest of the MacKenzies don’t know, however, is that Ellen, in the midst of her grief, has fallen head over heels for Brian, the illegitimate son of the despicable Lord Lovat (Tony Curran) and a member of a rival clan.—
Max Gao,
HollywoodReporter,
29 Aug. 2025
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Dumas’ injunction states that any decisions made in meetings with Weatherington claiming the chair seat are illegitimate.—
Raisa Habersham,
Miami Herald,
29 Aug. 2025
Adjective
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The letter follows the ouster of CDC director Susan Monarez just one month into her tenure after a disagreement over vaccine policy with Kennedy, a vaccine skeptic who has promoted a controversial and unfounded theory that links vaccines to autism.—
Swapna Venugopal Ramaswamy,
USA Today,
4 Sep. 2025
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Brazil’s top electoral court has already banned Bolsonaro from running in elections until 2030 over abuse of power while in office and casting unfounded doubts on the country’s electronic voting system.—
CNN Money,
CNN Money,
2 Sep. 2025
Adjective
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In a reply filed on Monday, the judges argued that the suit was legally baseless and unnecessary.—
Robert Alexander,
MSNBC Newsweek,
12 Aug. 2025
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Which is important to remember when considering the once again popular (and baseless) view of economists that the Fed is containing prices by paying banks for the right to theoretically sideline the monies entrusted to them.—
John Tamny,
Forbes.com,
10 Aug. 2025
Adjective
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By the time financial results reflect the decline, the underlying issue—namely, an overextended and unsupported CEO—has already taken root.—
Julian Hayes II,
Forbes.com,
31 Aug. 2025
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Eager, but unsupported Gen Z approaches AI with both enthusiasm and anxiousness.—
Nick Lichtenberg,
Fortune,
29 Aug. 2025
Adjective
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This initiative aims to safeguard fans against invalid or unauthorized resale and is available to fans subject to federal and local regulations.—
Michelle Kaufman,
Miami Herald,
3 Sep. 2025
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Continuing fines, meaning fines that are automatically added each month, also are likely invalid since a continuing violation is still just one violation.—
Kelly G. Richardson,
Oc Register,
29 Aug. 2025
Cite this Entry
“Unreasonable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unreasonable. Accessed 6 Sep. 2025.
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