NONRATIONAL Synonyms: 89 Similar and Opposite Words

nonrational

adjective

ˌnän-ˈrash-nəl

Definition of nonrational

as in irrational

not using or following good reasoning was so upset that he was completely nonrational for a moment

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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 nonrational Mid-century collective behavior theories considered social movements to be nonrational, spontaneous events occurring during moments of social and cultural breakdown. — The Editors, JSTOR Daily, 10 Sep. 2025

Recent Examples of Synonyms for nonrational

Adjective

Our simple equation, for example, has the solutions and , which are irrational; their digits begin and keep going forever without repeating.

— Quanta Magazine, Quanta Magazine, 9 Sep. 2026
So the strongest performers tend to resist hardest, and their response is not irrational.

— Pankaj Prasoon, Forbes.com, 2 Sep. 2026

Definition of irrational

Adjective

But in each event—in the living act, the undoubted deed—there, some unknown but still reasoning thing puts forth the mouldings of its features from behind the unreasoning mask.

— Literary Hub, Literary Hub, 6 July 2026
Roosevelt surely understood that nameless, unreasoning, unjustified fear cannot be eradicated.

— New York Times, New York Times, 9 June 2026

Definition of unreasoning

Adjective

The imposition of the tariffs stemmed from a breakdown in negotiations between the two countries in August, with each claiming the other side had unreasonable requests that would be detrimental to their respective country’s workers.

— Washington Examiner Staff, The Washington Examiner, 8 Sep. 2026
Drop one task that doesn’t need to happen today, and ask for clarification if a deadline feels unreasonable.

— Tarot.com, Baltimore Sun, 7 Sep. 2026

Definition of unreasonable

Adjective

The researchers suspect that others were created by AI that either hallucinated or, just like the AI agents browsing their file, couldn’t distinguish between legitimate and illegitimate instructions.

— Dan Goodin, ArsTechnica, 27 Aug. 2026
Internet discussions portrayed the SPLC as a politically motivated or illegitimate actor.

— Art Jipson, The Conversation, 20 Aug. 2026

Definition of illegitimate

Browse Nearby Words

nonrandom

nonrational

nonrealistic

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“Nonrational.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nonrational. Accessed 19 Sep. 2026.

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Synonyms of nonrational

adjective

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