hal·​lu·​ci·​nate | \ hə-ˈlü-sə-ˌnāt How to pronounce hallucinate (audio) \
hallucinated; hallucinating

Definition of hallucinate

transitive verb

1 : to affect with visions or imaginary perceptions
2 : to perceive or experience as a hallucination

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Other Words from hallucinate

hallucinator \ hə-​ˈlü-​sə-​ˌnā-​tər How to pronounce hallucinator (audio) \ noun

Examples of hallucinate in a Sentence

The patient may hallucinate if she has a fever.
Recent Examples on the Web In a region where multiple cars’ navigation systems were mistaking footpaths and coal-mine driveways for actual roads—or otherwise hallucinating roads that simply weren’t there—confidence matters. Jared Gall, Car and Driver, "Starter Sports Sedan Rivalry: Alfa vs. BMW vs. Genesis vs. Volvo," 24 Jan. 2020 Characters hallucinate, deliver soliloquies to the camera, suck on fentanyl lollipops; episodes are interrupted by animated musical tutorials about troll farms, Roy Cohn, non-disclosure agreements. Darren Franich, EW.com, "The best TV shows of the decade," 5 Dec. 2019 Is Hrabal’s neighbor really making such dramatic accusations, or is Hrabal hallucinating? Becca Rothfeld, The New Yorker, "The Violent Insights of Bohumil Hrabal," 19 Nov. 2019 Responding officers learned that the 18-year-old was on new medication and appeared to be hallucinating. cleveland.com, "Man finds Hitler at his front door: Mayfield Heights Police Blotter," 6 Sep. 2019 There are people with animal-head masks and the team hallucinates about their pasts. Mary Ann Grossmann, Twin Cities, "Literary Pick of the Week: Impending horror in Benjamin Percy’s short stories," 19 Oct. 2019 The combination of dehydration, hunger, exhaustion, and her fear of the dark causes Trisha to hallucinate. Christian Holub, EW.com, "Another Stephen King novel is getting made into a movie," 21 Aug. 2019 Alongside Jeff Bridges' depressed former DJ, Williams plays a homeless man reeling from the death of his wife, obsessed with finding the Holy Grail and hallucinating visions of a red knight. Kelly Lawler, USA TODAY, "The 5 best Robin Williams movies to remember him by," 11 Aug. 2019 That could be dangerous for consumers looking to relax, not hallucinate. San Diego Union-Tribune, "How much pot in that brownie? Chocolate can throw off tests," 26 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hallucinate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hallucinate

circa 1834, in the meaning defined at transitive sense 1

History and Etymology for hallucinate

Latin hallucinatus, past participle of hallucinari, allucinari to prate, dream, modification of Greek alyein to be distressed, to wander

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Time Traveler for hallucinate

Time Traveler

The first known use of hallucinate was circa 1834

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Statistics for hallucinate

Last Updated

6 Feb 2020

Cite this Entry

“Hallucinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hallucinate. Accessed 17 Feb. 2020.

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More Definitions for hallucinate


How to pronounce hallucinate (audio)

English Language Learners Definition of hallucinate

: to see or sense something or someone that is not really there : to have hallucinations


hal·​lu·​ci·​nate | \ hə-ˈlüs-ᵊn-ˌāt How to pronounce hallucinate (audio) \
hallucinated; hallucinating

Medical Definition of hallucinate

transitive verb

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

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More from Merriam-Webster on hallucinate

Thesaurus: All synonyms and antonyms for hallucinate

Rhyming Dictionary: Words that rhyme with hallucinate

Spanish Central: Translation of hallucinate

Nglish: Translation of hallucinate for Spanish Speakers

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