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
To address the former issue, members of the Tarteel team built an MCP server atop ChatGPT and Claude so that those chatbots correctly reference the Quran and Islamic literature and don’t hallucinate verses.
—
Andrew R. Chow, Time, 26 May 2026
The underlying technology uses sixteen years of structured mapping, global returns data, and garment construction expertise to prevent system lag and hallucinated recommendations on high-traffic shopping days.
—Arthur Zaczkiewicz, Footwear News, 26 May 2026
Remember, agentic systems can hallucinate or misjudge unfamiliar contexts.
—Asad Khan, Forbes.com, 26 May 2026
But hallucinated references in real studies produced by humans could be just as widespread, and potentially even harder to track down.
—Tristan Bove, Fortune, 24 May 2026
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Andrew R. Chow, Time, 26 May 2026
The underlying technology uses sixteen years of structured mapping, global returns data, and garment construction expertise to prevent system lag and hallucinated recommendations on high-traffic shopping days.
—Arthur Zaczkiewicz, Footwear News, 26 May 2026
Remember, agentic systems can hallucinate or misjudge unfamiliar contexts.
—Asad Khan, Forbes.com, 26 May 2026
But hallucinated references in real studies produced by humans could be just as widespread, and potentially even harder to track down.
—Tristan Bove, Fortune, 24 May 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 28 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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