hal·​o·​per·​i·​dol ˌha-lō-ˈper-ə-ˌdȯl How to pronounce haloperidol (audio)
: a depressant C21H23ClFNO2 of the central nervous system used especially as an antipsychotic drug

Examples of haloperidol in a Sentence

Recent Examples on the Web Indeed, haloperidol and olanzapine countered the amphetamine’s effect on D2, as expected. WIRED, 7 Aug. 2023 The three most common in muscle tissue were opioid pain reliever tramadol, the heart medicine flecainide and haloperidol. Bill Kearney, Sun Sentinel, 4 Apr. 2023 Some common first-generation antipsychotics include chlorpromazine, haloperidol, perphenazine, and fluphenazine; second-generation drugs include olanzapine, risperidone, quetiapine, aripiprazole, ziprasidone, lurasidone, cariprazine, and paliperidone. Ashley Abramson, SELF, 11 Feb. 2022 Treated with haloperidol, a drug that blocks dopamine from acting on receptors, the man became calm and relatively normal, but his creative jazz drive left him. Sherry Baker, Discover Magazine, 25 Mar. 2019 Avidan read the Introduction, Methods, and Results of this paper, about a recent clinical trial of the drug haloperidol. Neuroskeptic, Discover Magazine, 20 Mar. 2019 Records show the woman was taking haloperidol, Trileptal and Zyprexa, all medications that have been found to be harmful to fetuses in animal tests. Meg Kissinger and Steve Schultze, Milwaukee Journal Sentinel, 23 Aug. 2021 Antipsychotic drugs such as haloperidol and aripiprazole are approved for use in Tourette, but have the potential to cause long-term side effects, such as the movement disorder tardive dyskinesia. Dr. Keith Roach, oregonlive, 31 May 2021 On the list were such unexpected candidates as haloperidol, used to treat schizophrenia, and metformin, taken by people with Type 2 diabetes. Carl Zimmer, New York Times, 22 Mar. 2020 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'haloperidol.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


hal- + piperidine + -ol entry 1

First Known Use

1960, in the meaning defined above

Time Traveler
The first known use of haloperidol was in 1960

Dictionary Entries Near haloperidol

Cite this Entry

“Haloperidol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/haloperidol. Accessed 30 Nov. 2023.

Medical Definition


halo·​per·​i·​dol ˌhal-ō-ˈper-ə-ˌdȯl How to pronounce haloperidol (audio) -ˌdōl How to pronounce haloperidol (audio)
: a butyrophenone antipsychotic drug C21H23ClFNO2 used especially to treat schizophrenia and to control the involuntary tics and vocalizations of Tourette's syndrome see haldol

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