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
As in Williams’ case, attorneys argued that a sweep had violated the plaintiffs’ Fourth Amendment rights protecting them from unreasonable search and seizure, as well as their 14th Amendment right to due process.
—
Ariane Lange, Sacbee.com, 24 Mar. 2026
Because that is ultimately what The Secret Garden is about—the stubborn, almost unreasonable insistence of living things to grow toward the light.
—Literary Hub, 23 Mar. 2026
The Constitution’s Fourth Amendment protects against unreasonable searches and seizures, meaning that prolonged detention or invasive questioning typically requires reasonable suspicion or probable cause.
—Hannah Hudnall, USA Today, 23 Mar. 2026
These are not unreasonable requests.
—Ted G Callam, San Diego Union-Tribune, 23 Mar. 2026
See All Example Sentences for unreasonable
Ariane Lange, Sacbee.com, 24 Mar. 2026
Because that is ultimately what The Secret Garden is about—the stubborn, almost unreasonable insistence of living things to grow toward the light.
—Literary Hub, 23 Mar. 2026
The Constitution’s Fourth Amendment protects against unreasonable searches and seizures, meaning that prolonged detention or invasive questioning typically requires reasonable suspicion or probable cause.
—Hannah Hudnall, USA Today, 23 Mar. 2026
These are not unreasonable requests.
—Ted G Callam, San Diego Union-Tribune, 23 Mar. 2026
See All Example Sentences for unreasonable
Recent Examples of Synonyms for unreasonable
Adjective
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Letting Jinx stay is yet another act of irrational love from Margo.—
Erin Qualey,
Vulture,
15 Apr. 2026
-
That resistance is not irrational.—
Nick Lichtenberg,
Fortune,
15 Apr. 2026
Adjective
-
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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There seemed to be an unwarranted frenzy in the speed at which everything was played, as if music were as much a sport as an artistic pursuit.—
Tim Parks,
New Yorker,
11 Apr. 2026
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Grove City College argued that the federal government’s request amounted to unwarranted government intervention, because the college did not directly receive federal funding.—
Ryan Creps,
The Conversation,
9 Apr. 2026
Adjective
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The only one that can be called truly illegitimate by global and historical standards is the claim to the whole of the South China Sea.—
Anatol Lieven,
Twin Cities,
10 Apr. 2026
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Parker, with the bank’s fraud department, asked Schroeder about several legitimate transactions and one illegitimate one.—
Justin Wingerter,
Denver Post,
6 Apr. 2026
Adjective
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Coachella sold out with record spending from fans, and fears that ICE might show up for a prominent Latin headliner proved unfounded.—
Los Angeles Times,
Los Angeles Times,
19 Apr. 2026
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Valentine did not return phone calls on Thursday, but Lavelle said the board hired an investigator to look into the first complaint, which was determined to be unfounded.—
Andy Sheehan,
CBS News,
16 Apr. 2026
Adjective
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Prosecutors looking to strip Eastman of his law license had depicted him as fabricating a baseless theory and making false claims of fraud in hopes of overturning the results of the election.—
ABC News,
ABC News,
15 Apr. 2026
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Gregg Phillips, a far-right conspiracy theorist who has been previously cited by the president for his baseless claims about fraud in the 2020 presidential election, was tapped to lead FEMA’s Office of Response and Recovery in December 2025.—
Meredith Kile,
PEOPLE,
14 Apr. 2026
Adjective
-
The districts say the findings are politically motivated and unsupported by evidence.—
Glenn E. Rice,
Kansas City Star,
21 Apr. 2026
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Past experiences of being overlooked, criticized, or unsupported may come up today.—
USA TODAY,
USA Today,
16 Apr. 2026
Adjective
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After a hearing in March that revealed these exclusion criteria, a judge discharged the jury pool as invalid.—
Robert McCoppin,
Chicago Tribune,
20 Apr. 2026
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Thousands listed invalid emails or phone numbers.—
Michael Kaplan,
CBS News,
19 Apr. 2026
Cite this Entry
“Unreasonable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unreasonable. Accessed 26 Apr. 2026.
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