IRRATIONALITY Synonyms: 18 Similar and Opposite Words

irrationality

noun

Definition of irrationality

as in unreasonableness

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of irrationality This is where the irrationality of antisemitic conspiracy gains no purchase among a reasoning and pragmatic populace; where government is led by people who grasp, and embrace, the seriousness of their responsibilities. — Rory Lancman, New York Daily News, 5 Aug. 2026 Despite the seriocomic set-up, as Vibeke gets more unstable, Mengel refuses to play her irrationality for laughs, instead taking the more difficult route of earnestness. — Jessica Kiang, Variety, 7 July 2026 Moreover, experts should introduce deliberate irrationality to disrupt the model’s predictive path. — Syed Ahmad, Forbes.com, 15 May 2026 Viral memes and TikTok trends play up women’s purportedly excessive spike in libido during ovulation and dramatic irrationality during menstruation and the luteal phase (the 14 days or so between ovulation and menstruation). — Andréa Becker, The Atlantic, 3 May 2026 But this often requires accepting the fundamental irrationality of the wrapping-up process. — Joshua Rothman, New Yorker, 20 Mar. 2026 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

Recent Examples of Synonyms for irrationality

Noun

If the assassination made the President a Christlike figure, his forbearance in the face of a wife’s unreasonableness provides him with an extra measure of purity.

— Literary Hub, Literary Hub, 21 May 2026

Definition of unreasonableness

Noun

Moskowitz has made confronting antisemitism and political extremism a central part of his work in Congress.

— Susannah Bryan, Sun Sentinel, 19 Aug. 2026
New South Wales separately passed tighter state firearms laws in December, while the federal government also strengthened laws targeting hate speech and extremism.

— Landon Mion, FOXNews.com, 17 Aug. 2026

Definition of extremism

Noun

Throughout much of the Cold War, regional alliances held off both Soviet communism and Arab radicalism, which meant that the United States felt the need to intervene only rarely and briefly.

— Arash Azizi, The Atlantic, 13 Aug. 2026
Like the Fondation Cartier, PAC and the Shed package their radicalism in deluxe architectural confections.

— Justin Davidson, Curbed, 29 July 2026

Definition of radicalism

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irrationalities

irrationality

irreality

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“Irrationality.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irrationality. Accessed 26 Aug. 2026.

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Synonyms of irrationality

noun

Example Sentences

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