UNREASONABLENESS Synonyms: 18 Similar and Opposite Words

unreasonableness

noun

as in irrationality

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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 unreasonableness 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, 21 May 2026 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. — Thomas Mallon, New Yorker, 18 May 2026

Recent Examples of Synonyms for unreasonableness

Noun

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

Definition of irrationality

Noun

But peacefully speaking out for civilians suffering in war is neither terrorism nor extremism.

— Chicago Tribune, Chicago Tribune, 10 July 2026
Islamic extremism remains the biggest threat but over the past five years, threats from far-right groups and hostile states have significantly grown, said Laurence Taylor, head of counterterrorism police.

— ABC News, ABC News, 9 July 2026

Definition of extremism

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unreasonable

unreasonableness

unreasonably

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“Unreasonableness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unreasonableness. Accessed 20 Jul. 2026.

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Synonyms of unreasonableness

noun

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