Synonyms|132Antonyms|0|Broader|0Narrower|0Related|5
1
hop
1
inactive(adjective, sleepy)
1
junk
1
knockout drops
1
laudanum
1
lethargic(adjective, sleepy)
1
liquor
1
listless(adjective, sleepy)
1
lullaby
1
methadone
1
morphine
1
nightcap
1
opium
1
out(adjective, informal, sleepy)
1
out of it(expression, adjective, idiom, quiet, slow)
1
pacifier
1
pain killer
1
paregoric
1
pen yan
1
phenobarbital
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ChicagoSmart Define. 2015. "somnifacient thesaurus" https://smartdefine.org/somnifacient/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, somnifacient thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/somnifacient/thesaurus/synonyms>.
MLASmart Define. "somnifacient thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/somnifacient/thesaurus/synonyms>