somniferous
English
Etymology
From Latin somnifer + -ous, from somnus (“sleep”) + ferre (“to bring”).
Adjective
somniferous (comparative more somniferous, superlative most somniferous)
- (pharmacology) causing or inducing sleep, normally with harmful overtones.
Synonyms
- See also Thesaurus:soporific
Antonyms
- See also Thesaurus:invigorating