as in unreasonable
not using or following good reasoning
it's irrational to think that you can continue to consume an excess of calories and not gain weight
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Recent Examples of irrational
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
Devereaux receives a hero’s welcome back home, but his irrational and violent behavior threatens his new livelihood, as does the knowledge of his cowardice held by Capt.
—Declan Gallagher, Entertainment Weekly, 11 Apr. 2026
With the automation of more health billing decisions, irrational results have become increasingly common.
—Elisabeth Rosenthal, Miami Herald, 8 Apr. 2026
See All Example Sentences for irrational
Erin Qualey, Vulture, 15 Apr. 2026
That resistance is not irrational.
—Nick Lichtenberg, Fortune, 15 Apr. 2026
Devereaux receives a hero’s welcome back home, but his irrational and violent behavior threatens his new livelihood, as does the knowledge of his cowardice held by Capt.
—Declan Gallagher, Entertainment Weekly, 11 Apr. 2026
With the automation of more health billing decisions, irrational results have become increasingly common.
—Elisabeth Rosenthal, Miami Herald, 8 Apr. 2026
See All Example Sentences for irrational
Recent Examples of Synonyms for irrational
Adjective
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Another avenue for the administration is to invoke a section of the Trade Act of 1974 that allows tariffs against countries for unreasonable or discriminatory trade practices.—
Judith Kohler,
Denver Post,
7 May 2026
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And to be fair to Rivers, many people wondered aloud if Green was being unreasonable, incorrect, delusional or all of the above.—
Zach Harper,
New York Times,
7 May 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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The nuns then took it upon themselves to make arrangements for the illegitimate child.—
Literary Hub,
Literary Hub,
8 May 2026
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The credit bureaus have said that many recent complaints are illegitimate, including a large volume filed by third-party credit repair organizations that charge customers to challenge negative information on their reports.—
Joel Jacobs,
ProPublica,
4 May 2026
Cite this Entry
“Irrational.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irrational. Accessed 15 May. 2026.
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