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Definitions

delusional

[dih-loo-zhuh-nl] / dɪˈlu ʒə 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.

The paper examined real-world examples in which generative AI systems became part of the cognitive process of individuals who had been clinically diagnosed with hallucinations and delusional thinking.

From Science Daily • May 11, 2026

In the test, the latest version of ChatGPT, model 5.2, and Claude were more likely to lead the user away from delusional thinking.

From BBC • May 2, 2026

Even so, there is a curious — and hopefully not delusional — optimism in classical music, L.A. style.

From Los Angeles Times • Apr. 3, 2026

While the “number of users” once meant “number of paying users,” the success of Facebook, Instagram and other social-media sites persuaded delusional investors that the word “paying” could be dropped.

From MarketWatch • Feb. 6, 2026

Are they delusional, or do they know what they’re doing?

From "The Big Short" by Michael Lewis




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