1. an agent or drug that produces sleep; sedative.
  2. a person who is susceptible to hypnosis.
  3. a person under the influence of hypnotism.

Origin of hypnotic

1680–90; < Late Latin hypnōticus < Greek hypnōtikós sleep-inducing, narcotic, equivalent to hypnō- (variant stem of hypnoûn to put to sleep; see Hypnos) + -tikos -tic
Related formshyp·not·i·cal·ly, adverban·ti·hyp·not·ic, adjective, nounan·ti·hyp·not·i·cal·ly, adverbnon·hyp·not·ic, adjective, nounnon·hyp·not·i·cal·ly, adverbpre·hyp·not·ic, adjectiveun·hyp·not·ic, adjectiveun·hyp·not·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for anti-hypnotic


  1. of, relating to, or producing hypnosis or sleep
  2. (of a person) susceptible to hypnotism
  1. a drug or agent that induces sleep
  2. a person susceptible to hypnosis
Derived Formshypnotically, adverb

Word Origin for hypnotic

C17: from Late Latin hypnōticus, from Greek hupnōtikos, from hupnoun to put to sleep, from hupnos sleep
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for anti-hypnotic



1620s, "inducing sleep," originally used of drugs, from French hypnotique (16c.) "inclined to sleep, soporific," from Late Latin hypnoticus, from Greek hypnotikos "inclined to sleep, putting to sleep, sleepy," from hypnoun "put to sleep," from hypnos "sleep" (see somnolence). Modern sense of "pertaining to an induced trance" first recorded in English 1843, along with hypnotist, hypnotize, both coined by Dr. James Braid. Related: Hypnotical; hypnotically.

Online Etymology Dictionary, © 2010 Douglas Harper

anti-hypnotic in Medicine


  1. Of or relating to hypnotism or hypnosis.
  2. Inducing or tending to induce sleep; soporific.
  1. An agent that causes sleep.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.