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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.

Lucy Osler of the University of Exeter examined how interactions with conversational AI could contribute to false beliefs, distorted memories, altered personal narratives, and even delusional thinking.

From Science Daily • May 11, 2026

They said he displayed ongoing delusional beliefs, and lacked insight into his illness and treatment needs.

From BBC • Apr. 27, 2026

Which is not to say Yee is delusional.

From Los Angeles Times • Mar. 8, 2026

By August, as problems with users suffering from delusional psychosis appeared in media reports, OpenAI attempted to retire 4o entirely and replace it with a new version, named GPT-5.

From The Wall Street Journal • Feb. 10, 2026

Diane was either delusional or, more likely, trying to keep her children from ruining dinner.

From "Far from the Tree" by Robin Benway




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