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 hallucinate (audio) \ noun

Examples of hallucinate in a Sentence

The patient may hallucinate if she has a fever.
Recent Examples on the Web Drugs like 'shrooms don’t just make people hallucinate. Sarah Scoles, Popular Science, "What happens when psychedelics make you see God," 9 Nov. 2020 People who hallucinate are said to see _____ elephants; 21. Richard Lederer, San Diego Union-Tribune, "I bet you’ll pass this colorful quiz with flying colors," 3 Oct. 2020 The Benadryl Challenge is allegedly making the rounds on TikTok, encouraging social media users to overdose on the over-the-counter drug in order to hallucinate. Zee Krstic, Good Housekeeping, "What Is the Benadryl Challenge on TikTok? Why Experts Say This Trend Is Highly Dangerous," 9 Sep. 2020 The game, which encourages people to take as much allergy medicine as needed in order to hallucinate, is one of the latest fads on the popular social media platform TikTok, the Banner Poison and Drug Information Center warned. Jamie Landers, The Arizona Republic, "Banner experts warn of dangerous social media game the 'Benadryl challenge'," 4 Sep. 2020 The surveillance footage shows Rodriguez in apparent distress, naked and hallucinating. CBS News, "Disturbing video shows mother of five crawling in jail cell days before she died: "A window into hell"," 12 Feb. 2020 Emily hallucinates the image of a bumblebee the size of a horse. Carmel Kookogey, National Review, "Apple TV’s Dickinson Does Damage to the Poet’s Legacy," 16 Dec. 2019 Granted, having her drugged and hallucinating felt a bit manipulative. Brian Lowry, CNN, "'The Walking Dead' weathers another major cast exit, with an eye on the future," 22 Mar. 2020 The school guidance counsellor had also suggested that Syd may have been hallucinating images of her father to cope with losing him. Martha Sorren, refinery29.com, "Let’s Talk About The Mystery Man On I Am Not Okay With This," 2 Mar. 2020

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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Cite this Entry

“Hallucinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hallucinate. Accessed 8 Mar. 2021.

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More Definitions for hallucinate



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

More from Merriam-Webster on hallucinate

Thesaurus: All synonyms and antonyms for hallucinate

Nglish: Translation of hallucinate for Spanish Speakers

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