adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Inducing stupor; making drowsy; stupefacient.

   "Opium and laudanum, which is a preparation of opium, are both stimulating and stupefactive."

Synonyms

All synonyms

drowsynarcoticsleepyslumberoussnoozysomnolent

Example

More examples

"Opium and laudanum, which is a preparation of opium, are both stimulating and stupefactive."

Etymology

Compare French stupéfactif.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.