tran·​quil·​iz·​er ˈtraŋ-kwə-ˌlī-zər How to pronounce tranquilizer (audio)
variants or less commonly tranquillizer
: a drug used to reduce mental disturbance (such as anxiety and tension) compare antipsychotic
: one that tranquilizes

Examples of tranquilizer in a Sentence

a patient who is on tranquilizers
Recent Examples on the Web The tranquilizers were sometimes too weak to render a calf fully unconscious. Ferris Jabr, Smithsonian Magazine, 3 July 2024 The tranquilizer is often found in opioid cocktails, and Narcan would have an effect on the opioid component. Natalie Eilbert, Journal Sentinel, 7 June 2024 But in 2023, the tranquilizer was the culprit in seven deaths, a number not seen in six years. José Luis Martínez, Hartford Courant, 1 June 2024 Crews would deploy culvert traps or, where feasible, shoot tranquilizers from helicopters to capture the bears. Benjamin Cassidy, Scientific American, 14 May 2024 See all Example Sentences for tranquilizer 

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

Word History

First Known Use

1800, in the meaning defined at sense 2

Time Traveler
The first known use of tranquilizer was in 1800

Dictionary Entries Near tranquilizer

Cite this Entry

“Tranquilizer.” Dictionary, Merriam-Webster, Accessed 24 Jul. 2024.

Kids Definition


variants also tranquillizer
: one that tranquilizes
especially : a drug used to reduce anxiety and nervous tension

Medical Definition


variants or chiefly British tranquillizer or tranquilliser
: a drug used to reduce mental disturbance (as anxiety and tension) see antipsychotic
Last Updated: - Updated example sentences
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