stupefacient

stupefacient

[stoo-puh-fey-shuhnt, styoo-]
adjective
1.
stupefying; producing stupor.
noun
2.
a drug or agent that produces stupor.

Origin:
1660–70; < Latin stupefacient- (stem of stupefaciēns) present participle of stupefacere to benumb; see stupefy, -facient

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World English Dictionary
stupefacient (ˌstjuːpɪˈfeɪʃɪənt)
 
n
1.  a drug that causes stupor
 
adj
2.  of, relating to, or designating this type of drug
 
[C17: from Latin stupefacere to make senseless, from stupēre to be stunned + facere to make]

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