hallucinate

[huh-loo-suh-neyt] / həˈlu səˌneɪt /

VERB

imagine vividly

Synonyms

STRONGEST

daydream fantasize freak out

STRONG

envision trip visualize

WEAK

blow one's mind have visions head trip hear voices

Antonyms

WEAK

experience

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 compression, however, can cause the model to hallucinate, or make mistakes.

From Barron's • Mar. 26, 2026

Especially as someone who hasn’t been back in a long time—when I see these images, they almost make me hallucinate.

From Slate • Mar. 3, 2026

“They hallucinate and have trouble with reasoning,” he said.

From MarketWatch • Nov. 29, 2025

Like ChatGPT, these AI-powered assistants sometimes hallucinate, too.

From The Wall Street Journal • Oct. 3, 2025

One glance at his dumbstruck face was all I needed to know that I didn’t just hallucinate everything.

From "Warcross" by Marie Lu