Definition of stupefacient in English:


Syllabification: stu·pe·fa·cient
Pronunciation: /ˌst(y)o͞opəˈfāSHənt


  • (Chiefly of a drug) causing semiconsciousness.


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  • A stupefacient drug.
    More example sentences
    • In his column George Will wrote that our yearly consumption of stupefacients amounts to $50 billion.
    • Regarding analgesics, he was remarkably current: ‘The most powerful of the stupefacients is opium.’
    • Although some local fishers were trained by foreign fishers to use cyanide as a stupefacient, others found that they could catch live food reef fish using traditional methods, or variations of them.


mid 17th century: from Latin stupefacient- 'stupefying', from the verb stupefacere.

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