Synonyms|132Antonyms|0|Broader|0Narrower|0Related|5
1
analgesic
1
anodyne
1
barb
1
barbiturate
1
blah(adjective, informal, sleepy)
1
blue devil
1
blue velvet
1
calmative
1
calming(noun, soporific)
1
codeine
1
comatose(adjective, sleepy)
1
depressant
1
dolly
1
downer
1
draggy(adjective, quiet, slow, heavy, sleepy)
1
drowsy(noun, adjective, sleepy, soporific)
1
goofball
1
hard stuff
1
heavy(adjective, informal, sleepy)
1
heroin
For more, visit Somnifacient on Power Thesaurus
11 years ago|1.2k views|share |citing 
APASmart Define. (2015). somnifacient thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/somnifacient/thesaurus/synonyms
ChicagoSmart Define. 2015. "somnifacient thesaurus" https://smartdefine.org/somnifacient/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, somnifacient thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/somnifacient/thesaurus/synonyms>.
MLASmart Define. "somnifacient thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/somnifacient/thesaurus/synonyms>