Stupefacient

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any drug that induces stupor or drowsiness.
Adjective
  1. 1
    Inducing stupor or drowsiness (with a drug such as a narcotic or an anaesthetic).

Synonyms

All synonyms
drowsysleep inducersleepyslumberoussnoozysomnolent

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