Synonyms|394Antonyms|4|Broader|31Narrower|8Related|173
1
sleeping beauty
1
sleeping clothes
1
sleeping draught
1
sleeping pill
1
sleuth(noun, plant, agent, operative, informer)
1
slim chance(noun, expression, unknown, doubtfulness, underdog)
1
slugabed
1
smack
1
small chance(noun, expression, unknown, doubtfulness, underdog)
1
smash(noun, informal, thrive, dazzling)
1
smoker
1
smoking car
1
snoop(noun, plant, agent, operative, informer)
1
sodium thiopental
1
somnifacient
1
somniloquist
1
soother
1
soothing syrup
1
soporific
1
spook(noun, plant, agent, operative, informer)
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APASmart Define. (2015). sleeper thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sleeper/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleeper thesaurus" https://smartdefine.org/sleeper/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sleeper thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sleeper/thesaurus/synonyms>.
MLASmart Define. "sleeper thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sleeper/thesaurus/synonyms>