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 AI chatbots still easily hallucinate security problems,” Stenberg said.

From The Wall Street Journal • Mar. 6, 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

AI agents are increasingly widespread but experts warn they can "hallucinate" non-existent events.

From Barron's • Feb. 27, 2026

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

From MarketWatch • Nov. 29, 2025

My fever gets worse, and during one terrible evening I start to hallucinate.

From "Landscape with Invisible Hand" by M.T. Anderson