IRRATIONALLY Synonyms: 89 Similar and Opposite Words

irrational

adjective

i-ˈra-sh(ə-)nəl

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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Example Sentences

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Recent Examples of irrational Seb Stafford-Bloor LA Lakers/New York Knicks (NBA) The hardest coaching job is one where expectations are high, patience is low and, sometimes, the view is irrational. —

The Athletic Staff, New York Times, 15 Feb. 2026 Those sorts of things are irrational to me. —

CBS News, 15 Feb. 2026 This discovery can explain apparently irrational behavior. —

Literary Hub, 13 Feb. 2026 The letter spoke to the real-estate developer’s irrational paranoia at that moment. —

Matthew Bremner, Rolling Stone, 11 Feb. 2026 See All Example Sentences for irrational

Recent Examples of Synonyms for irrational

Adjective

Hartsuch appealed, but in October 2025, the Iowa Court of Appeals upheld the district court’s ruling, setting the stage for Hartsuch’s newest lawsuit alleging the board’s actions were unreasonable, violated his rights and destroyed his livelihood.

— Clark Kauffman, Iowa Capital Dispatch, 28 Feb. 2026
Too much one-sidedness can deplete both enthusiasm and resources — and wanting a roughly reciprocal relationship is not unreasonable.

— Judith Martin, Dallas Morning News, 28 Feb. 2026