Synonyms|46Antonyms|4|Broader|0Narrower|0Related|76
1
lethargic
1
napping
1
sluggish
1
slumberous
1
somnifacient
1
somnorific(adjective, dulling, confidentiality, somniferous, somnifacient)
1
soporous
1
stupefacient(adjective, dulling, confidentiality, somniferous, somnifacient)
1
stupefactive(adjective, dulling, confidentiality, somniferous, somnifacient)
1
uninteresting
0
anodyne
0
causing sleep(expression, idiom)
0
dulling
0
heavy with sleep(expression, idiom, inactivity)
0
inviting slumber(expression, idiom)
0
lethargical
0
muffling
0
painkilling
0
sleep-inducing(adjective, sleep)
0
sleep inducing(expression, idiom)
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APASmart Define. (2013). soporiferous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/soporiferous/thesaurus/synonyms
ChicagoSmart Define. 2013. "soporiferous thesaurus" https://smartdefine.org/soporiferous/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2013, soporiferous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/soporiferous/thesaurus/synonyms>.
MLASmart Define. "soporiferous thesaurus" 28 June 2013. Web. 28 September 2026. <https://smartdefine.org/soporiferous/thesaurus/synonyms>