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soporific

[sop-uh-rif-ik, soh-puh-] /ˌsɒp əˈrɪf ɪk, ˌsoʊ pə-/
adjective
1.
causing or tending to cause sleep.
2.
pertaining to or characterized by sleep or sleepiness; sleepy; drowsy.
noun
3.
something that causes sleep, as a medicine or drug.
Origin
1655-1665
1655-65; < Latin sopor sopor + -i- + -fic; compare French soporifique
Related forms
soporifically, adverb
antisoporific, adjective, noun
nonsoporific, adjective, noun
unsoporific, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for unsoporific

soporific

/ˌsɒpəˈrɪfɪk/
adjective
1.
inducing sleep
2.
drowsy; sleepy
noun
3.
a drug or other agent that induces sleep
Derived Forms
soporifically, adverb
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
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Word Origin and History for unsoporific

soporific

adj.

"tending to produce sleep," 1680s, from French soporifique (17c.), formed in French from Latin sopor (genitive soporis) "deep sleep" (see sopor). As a noun from 1722. Earlier as an adjective was soporiferous (1580s as "characterized by excessive sleep," c.1600 as "soporific").

Online Etymology Dictionary, © 2010 Douglas Harper
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unsoporific in Medicine

soporific sop·o·rif·ic (sŏp'ə-rĭf'ĭk, sō'pə-)
adj.

  1. Inducing or tending to induce sleep.

  2. Sleepy; drowsy.

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