or tran·quil·liz·er

[ trang-kwuh-lahy-zer ]
/ ˈtræŋ kwəˌlaɪ zər /


a person or thing that tranquilizes.
a drug that has a sedative or calming effect without inducing sleep.

Nearby words

  1. trannie,
  2. tranny,
  3. tranquil,
  4. tranquility,
  5. tranquilize,
  6. tranquillity,
  7. tranquillize,
  8. tranquillizer,
  9. tranquilly,
  10. trans

Origin of tranquilizer

First recorded in 1790–1800; tranquilize + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tranquilizer

Word Origin and History for tranquilizer



"sedative," 1824 (first reference is to ground ivy), agent noun from tranquilize; in reference to one of a large group of anti-anxiety drugs, it is recorded by 1956.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for tranquilizer


[ trăngkwə-līz′ər, trăn- ]


Any of various drugs used to reduce tension or anxiety; an antianxiety agent.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.