as in unreasonableness
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Recent Examples of irrationality
The irrationality of politicians suddenly makes sense.
—
The Editorial Board, Oc Register, 24 Feb. 2026
In such conditions, apparent irrationality can invite probing, hedging or reciprocal escalation.
—Andrew Latham, The Conversation, 26 Jan. 2026
Such irrationality proofs have been rare — and at times, according to longtime Quanta contributor Erica Klarreich, dramatic.
—Jordana Cepelewicz, Quanta Magazine, 18 Dec. 2025
When prompt instructions encouraged models to maximize rewards or hit specific financial goals, irrationality increased.
—Jesus Mesa, MSNBC Newsweek, 22 Oct. 2025
This irrationality, which is especially difficult to model, often boils down to computational constraints.
—John Werner, Forbes.com, 5 Aug. 2025
The Editorial Board, Oc Register, 24 Feb. 2026
In such conditions, apparent irrationality can invite probing, hedging or reciprocal escalation.
—Andrew Latham, The Conversation, 26 Jan. 2026
Such irrationality proofs have been rare — and at times, according to longtime Quanta contributor Erica Klarreich, dramatic.
—Jordana Cepelewicz, Quanta Magazine, 18 Dec. 2025
When prompt instructions encouraged models to maximize rewards or hit specific financial goals, irrationality increased.
—Jesus Mesa, MSNBC Newsweek, 22 Oct. 2025
This irrationality, which is especially difficult to model, often boils down to computational constraints.
—John Werner, Forbes.com, 5 Aug. 2025
Recent Examples of Synonyms for irrationality
Noun
-
Young people have the right to think for themselves rather than having conservative extremism forced upon them in class.—
Arkansas Online,
Arkansas Online,
16 Mar. 2026
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Authorities said Hasan was motivated by Islamic extremism and opposition to the wars in Afghanistan and Iraq.—
N'dea Yancey-Bragg,
USA Today,
13 Mar. 2026
Noun
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The challenge of Islamic terrorism in America is that, just like the homegrown terrorism of white supremacists, the radicalism is often diffuse.—
Juliette Kayyem,
The Atlantic,
10 Mar. 2026
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Warnings about the radicalism of Jay Jones and Spanberger never stuck.—
Ray Nothstine,
Washington Post,
10 Feb. 2026
Cite this Entry
“Irrationality.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irrationality. Accessed 18 Mar. 2026.
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