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stupefacient

[stoo-puh-fey-shuh nt, styoo-]
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adjective
  1. stupefying; producing stupor.
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noun
  1. a drug or agent that produces stupor.
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Origin of stupefacient

1660–70; < Latin stupefacient- (stem of stupefaciēns) present participle of stupefacere to benumb; see stupefy, -facient
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for stupefacient

calming, anesthetic, opium, painkiller, dope, sedative, opiate, tranquilizer, heroin, merchandise, hypnotic, soporific, analgesic, deadening, junk, fix, stuff, anodyne, downer, lenitive

British Dictionary definitions for stupefacient

stupefacient

noun
  1. a drug that causes stupor
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adjective
  1. of, relating to, or designating this type of drug
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Word Origin for stupefacient

C17: from Latin stupefacere to make senseless, from stupēre to be stunned + facere to make
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