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
It’s been reopened in chunks, thanks to the unrelenting optimism and irrational persistence of a corps of downtown residents led by Rodriguez and Rosa Chang.
—
Justin Davidson, Curbed, 16 June 2025
On the other hand, especially given that the vote was still restricted to only a small minority of propertied men, the rise of party politics itself sharpened the age-old mistrust of popular judgment as irrational and easily swayed—especially by lies.
—Fara Dabhoiwala, Harpers Magazine, 4 June 2025
Maybe irrational confidence in my ability, my basketball abilities.
—Ira Winderman, Sun Sentinel, 30 May 2025
To many watching, Elon Musk’s decision to publicly insult President Trump seemed self-destructive, if not outright irrational.
—Joel Shulman, Forbes.com, 8 June 2025
See All Example Sentences for irrational
Justin Davidson, Curbed, 16 June 2025
On the other hand, especially given that the vote was still restricted to only a small minority of propertied men, the rise of party politics itself sharpened the age-old mistrust of popular judgment as irrational and easily swayed—especially by lies.
—Fara Dabhoiwala, Harpers Magazine, 4 June 2025
Maybe irrational confidence in my ability, my basketball abilities.
—Ira Winderman, Sun Sentinel, 30 May 2025
To many watching, Elon Musk’s decision to publicly insult President Trump seemed self-destructive, if not outright irrational.
—Joel Shulman, Forbes.com, 8 June 2025
See All Example Sentences for irrational
Recent Examples of Synonyms for irrational
Adjective
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In making arrests, the federal government allegedly went against both immigration laws and the Fourth Amendment, which protects people from unreasonable searches and seizures by the government, the plaintiffs argue.—
Laura Rodríguez Presa,
Chicago Tribune,
14 July 2025
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Medical device safety alert: issued in situations where a medical device may present an unreasonable risk of substantial harm.—
Marley Malenfant,
Austin American Statesman,
3 July 2025
Adjective
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Trump’s comments came as Secretary of State Marco Rubio announced sanctions against U.N. official Francesca Albanese, accusing her of pushing illegitimate efforts at the International Criminal Court targeting U.S. and Israeli leaders.—
Samantha-Jo Roth,
The Washington Examiner,
9 July 2025
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And then, on top of it, I was born out of some affair like some illegitimate, sinful mistake?—
Brie Stimson,
FOXNews.com,
28 June 2025
Cite this Entry
“Irrational.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irrational. Accessed 18 Jul. 2025.
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