1
sedated
1
sedative(adjective, awareness)
1
slack(adjective, dull, slow, heavy, still)
1
sleepyhead(adjective, dull, quiet, slow, heavy)
1
sleepyheaded(adjective, dull, slow, heavy, sluggish)
1
slothful(adjective, dull, slow, heavy, still)
1
slow(adjective, dull, quiet, heavy, weary)
1
slow-moving(adjective, dull, slow, heavy, stupid)
1
sluggard(adjective, dull, slow, heavy, still)
1
slumbering
1
slumbersome
1
somnific(adjective, awareness, sleepy)
1
soothing(noun, adjective, dull, tired, lethargic)
1
soporiferous
1
stagnant(adjective, dull, slow, heavy, apathetic)
1
stiff(adjective, dull, slow, heavy, sluggish)
1
still
1
stolid(adjective, dull, still, weary, apathetic)
1
stupefied(adjective, dull, cold, stupid, idle)
1
stupid
11 years ago|2.4k views|share |citing 
APASmart Define. (2015). slumberous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/slumberous/thesaurus/synonyms
ChicagoSmart Define. 2015. "slumberous thesaurus" https://smartdefine.org/slumberous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, slumberous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/slumberous/thesaurus/synonyms>.
MLASmart Define. "slumberous thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/slumberous/thesaurus/synonyms>