Synonyms|46Antonyms|4|Broader|0Narrower|0Related|76
13
narcotic(adjective, dulling, confidentiality, somniferous, somnifacient)
9
soporific(adjective, inactivity)
7
somnific(adjective, inactivity)
6
somniferous(adjective, inactivity)
5
hypnogogic
4
hypnagogic
3
heavy
3
narcotizing
2
drowsy(adjective, inactivity)
2
dull
2
hypnotic
2
narcotising
2
sleepy(adjective, inactivity)
2
somnolent(adjective, inactivity)
1
balmy
1
deadening(adjective, dulling, painkilling)
1
depressant
1
dozy
1
dreamy
1
lazy
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APASmart Define. (2013). soporiferous thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/soporiferous/thesaurus/synonyms
ChicagoSmart Define. 2013. "soporiferous thesaurus" https://smartdefine.org/soporiferous/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, soporiferous thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/soporiferous/thesaurus/synonyms>.
MLASmart Define. "soporiferous thesaurus" 28 June 2013. Web. 20 September 2026. <https://smartdefine.org/soporiferous/thesaurus/synonyms>