hallucinate
verb
hal·lu·ci·nate
hə-ˈlü-sə-ˌnāt 
hallucinated; hallucinating
1
: to affect with visions or imaginary perceptions
2
: to perceive or experience as a hallucination
: to have hallucinations
Examples of hallucinate in a Sentence
The patient may hallucinate if she has a fever.
Recent Examples on the Web
Most notably, the line is crossed when AI hallucinates facts or strips away human voice.
—
Rolling Stone Culture Council, Rolling Stone, 11 May 2026
That number is quite low, Topaz and others said, but more worrisome is the fact that hallucinated citations are becoming more common.
—Anil Oza, STAT, 7 May 2026
You’ve been known to hallucinate, make mistakes and sometimes spread misinformation.
—Benjamin Svetkey, HollywoodReporter, 1 May 2026
While offering a musical analysis for fart sound effects may sound like a harmless gag, the tech’s tendency to hallucinate and mislead could have far more serious consequences as well.
—Victor Tangermann, Futurism, 15 Apr. 2026
See All Example Sentences for hallucinate
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Rolling Stone Culture Council, Rolling Stone, 11 May 2026
That number is quite low, Topaz and others said, but more worrisome is the fact that hallucinated citations are becoming more common.
—Anil Oza, STAT, 7 May 2026
You’ve been known to hallucinate, make mistakes and sometimes spread misinformation.
—Benjamin Svetkey, HollywoodReporter, 1 May 2026
While offering a musical analysis for fart sound effects may sound like a harmless gag, the tech’s tendency to hallucinate and mislead could have far more serious consequences as well.
—Victor Tangermann, Futurism, 15 Apr. 2026
See All Example Sentences for hallucinate
Cite this Entry
“Hallucinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hallucinate. Accessed 15 May. 2026.
Copy CitationKids Definition
hallucinate
verb
hal·lu·ci·nate
hə-ˈlüs-ə-ˌnāt
hallucinated; hallucinating
: to have hallucinations or experience as a hallucination
Medical Definition
hallucinate
verb
hal·lu·ci·nate
hə-ˈlüs-ᵊn-ˌāt
hallucinated; hallucinating
1
: to affect with visions or imaginary perceptions
the patient is not hallucinated
2
: to perceive or experience as a hallucination
may hallucinate monsters or attackers—M. J. Horowitz
M. J. Horowitz
: to have hallucinations
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