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Definitions

irrationally

[ih-rash-uh-nl-ee, -rash-nl-] / ɪˈræʃ ə nl i, -ˈræʃ nl- /
ADVERB
illogically
Synonyms


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.

But rational investors also know that markets can behave irrationally, and historians have filled books with examples of world leaders who have chosen to irrationally launch or extend wars, even at great economic cost.

From Barron's • May 1, 2026

I found myself irrationally angry about the way T-Mobile convinced the Backstreet Boys to parody “I Want It That Way” with facile sloganeering.

From Slate • Feb. 8, 2026

Needham’s Berg also notes that one pocket of software that has irrationally been swept up in the selloff this week is human-resources and payroll software.

From MarketWatch • Feb. 7, 2026

Defending Rumiantsev, Sasha Wass KC described Trump as a "wholly unreliable witness" who was "irrationally jealous" of her client.

From BBC • Jan. 26, 2026

Karl the Fog burned Rishi’s nose, and he felt suddenly, irrationally angry at a weather pattern.

From "When Dimple Met Rishi" by Sandhya Menon




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