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Definitions

irrational

[ih-rash-uh-nl, -rash-nl] / ɪˈræʃ ə nl, -ˈræʃ nl /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Peter Doomanis backed up Carpenter’s claims against Applegate and said that the man poses a serious “and escalating” threat to the singer, and has “developed a disturbing and irrational fixation” on the pop star.

From Los Angeles Times • Jun. 2, 2026

Macgregor had never known her old friend to be irrational.

From The Wall Street Journal • May 23, 2026

“The current ‘flash-sale wars’ are typical competition under demand-side economies of scale but have escalated into irrational capital burn,” said Chen Tianhao, an associate professor at Tsinghua University.

From Barron's • May 23, 2026

“I think that irrational exuberance that we saw in the dot com era … is just window dressing to cloak what, to me, is normalizing an addictive behavior in our society,” he said.

From MarketWatch • May 19, 2026

The lazy, empty days in the city and the irrational atmosphere in the house set my nerves on edge.

From "The House of the Spirits: A Novel" by Isabel Allende




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