Synonyms|132Antonyms|0|Broader|0Narrower|0Related|5
9
narcotic(noun, adjective, awareness, sleep, sleepy)
7
hypnotic(noun, adjective, awareness, sleepy, dope)
7
opiate(noun, adjective, awareness, sleepy, dope)
7
soporific(noun, adjective, awareness, sleepy, dope)
6
somnolent(noun, adjective, dull, awareness, sleepy)
5
sedative(noun, adjective, awareness, sleepy, dope)
5
slumberous(noun, adjective, awareness, sleepy, soporific)
4
sleepy(adjective, awareness)
4
somniferous(noun, adjective, dull, quiet, heavy)
4
somnific(adjective, quiet, dark, heavy, awareness)
4
soothing(noun, dull, balmy, appeasement, soporific)
3
anesthetic(noun, soporific)
2
balmy(noun, dull, soporific)
2
dozy(noun, adjective, dull, quiet, slow)
2
dull(noun, balmy, corn, soporific, triteness)
2
quietening(noun, soporific)
2
red
2
snoozy(noun, adjective, dull, quiet, slow)
2
tranquilizing(noun, soporific)
1
alcohol
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APASmart Define. (2015). somnifacient thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/somnifacient/thesaurus/synonyms
ChicagoSmart Define. 2015. "somnifacient thesaurus" https://smartdefine.org/somnifacient/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, somnifacient thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/somnifacient/thesaurus/synonyms>.
MLASmart Define. "somnifacient thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/somnifacient/thesaurus/synonyms>