4
somniferous(adjective, awareness)
3
dopey(adjective, dull, quiet, slow, cold)
3
opiate(adjective, awareness)
3
snoozy(noun, adjective, dull, quiet, slow)
2
dreamy(adjective, apathetic, tired, sluggish, lazy)
2
drugged(adjective, cold, dead, tired, senseless)
2
dull(noun, adjective, quiet, slow, heavy)
2
hebetudinous(adjective, dull, slow, cold, heavy)
2
inactive(adjective, dull, quiet, slow, heavy)
2
languid(adjective, dull, slow, still, weary)
2
out of it(expression, adjective, idiom, quiet, slow)
2
sleeping
2
stretchy(adjective, dull, stupid, idle, weary)
2
stuporous(adjective, lethargic)
2
yawning
1
anaesthetised
1
anesthetized
1
apathetic(adjective, dull, slow, heavy, still)
1
blah(adjective, dull, quiet, slow, heavy)
1
debilitated(adjective, dull, stupid, idle, weary)
11 years ago|2.4k views|share |citing 
APASmart Define. (2015). slumberous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/slumberous/thesaurus/synonyms
ChicagoSmart Define. 2015. "slumberous thesaurus" https://smartdefine.org/slumberous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, slumberous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/slumberous/thesaurus/synonyms>.
MLASmart Define. "slumberous thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/slumberous/thesaurus/synonyms>