antipsychotic

American  

[an-tee-sahy-kot-ik, an-tahy-] / ˌæn ti saɪˈkɒt ɪk, ˌæn taɪ- /

adjective

1. of or relating to any of various substances used in the treatment of psychosis, especially schizophrenia, and acute or severe states of mania, depression, or paranoia.

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noun

1. Also called neuroleptic.  Also called major tranquilizer.  any such substance, as the phenothiazines.

antipsychotic British  

/ ˌæntɪsaɪˈkɒtɪk /

adjective

1. preventing or treating psychosis

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noun

1. any antipsychotic drug, such as chlorpromazine: used to treat such conditions as schizophrenia

Etymology

Origin of antipsychotic

First recorded in 1950–55; anti- + psychotic

Example Sentences

“Medical directors failed to prevent inappropriate use of antipsychotic drugs,” and “nursing home pharmacists failed to identify medical concerns and did not recommend dose reductions.”

From MarketWatch • Apr. 7, 2026

Risperidone is a powerful antipsychotic often prescribed to dementia patients who experience severe agitation or aggressive behavior.

From Science Daily • Mar. 8, 2026

Patients can be supported and treated with a mix of antipsychotic medications, talking therapies and family support.

From BBC • Dec. 10, 2025

An antipsychotic, risperidone, when she was 15 made her sick and put her in the hospital.

From The Wall Street Journal • Nov. 20, 2025

An assortment of antipsychotic medicines was prescribed, and he improved gradually—but never enough, apparently, to merit discharge.

From "The Gene" by Siddhartha Mukherjee