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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.

“In view of the current robust demand for AI cloud services, we are not concerned that Tencent’s deeper involvement in the AI cloud market would lead to irrational competition.”

From The Wall Street Journal • Mar. 23, 2026

However, she said she had experienced fear and irrational guilt after Eliza's diagnosis.

From BBC • Mar. 22, 2026

While the motives that drive a knight are often human, political, or both, the logic is as miraculous and irrational as a muddy hedge knight crawling out from under a fallen dragon.

From Salon • Feb. 25, 2026

Freight was another sector that some analysts said was subjected to irrational AI fears last week.

From MarketWatch • Feb. 17, 2026

All other intervals are given by irrational numbers based on the twelfth root of two, not nice numbers that can be written as a ratio of two small whole numbers.

From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones