Synonyms|132Antonyms|0|Broader|0Narrower|0Related|5
1
quiet(adjective, sleepy)
1
rainbow
1
scag
1
shit
1
sleeper
1
sleeping(adjective, sleepy)
1
sleeping pill
1
slow(adjective, sleepy)
1
sluggish(adjective, sleepy)
1
smack
1
soporiferous
1
tar
1
torpid(adjective, sleepy)
1
tranquiliser
1
tranquilizer
1
yellow
1
yellow jacket
0
analgesia
0
appeasement
0
asleep(adjective, sleepy)
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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>