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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.

The most important lesson from that irrationally exuberant time is that overvaluation can lead to below-average returns for years — and even decades.

From MarketWatch • Mar. 13, 2026

Some American stocks are being irrationally hit by fears of disruption by artificial intelligence.

From Barron's • Feb. 10, 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

"The rational world is behaving irrationally by giving him this welcome," she said.

From BBC • Aug. 16, 2025

Humans, I’d noticed, seem to be irrationally fond of dogs, and I could see why a puppy would be easier to cuddle with than, say, a gorilla.

From "The One and Only Ivan" by Katherine Applegate