4
snoozy(adjective, dull, quiet, slow, careless)
4
somnifacient(adjective, inactivity, awareness)
4
still(adjective, dull, idle, sluggish, lifeless)
4
stupefied(adjective, dull, slow, cold, idle)
4
unmoving(adjective, still, lifeless, inactive, motionless)
4
weak(adjective, weary)
3
beat(adjective, gloomy, weary, tired, stale)
3
benumbed(adjective, dull)
3
blah(adjective, dull, quiet, slow, informal)
3
blunt(adjective, dull)
3
bovine(adjective, dull)
3
depressed(adjective, gloomy, sick, weary, dismal)
3
flaccid(adjective, weary, inactive, inert, unreceptive)
3
flat(adjective, quiet, indifferent, apathetic, lifeless)
3
indifferent(adjective, dull, quiet, beat, slow)
3
jobless(adjective, dull, idle, sluggish, lazy)
3
knocked out(expression, adjective, beat, gloomy, depressed)
3
obtuse(adjective, dull, insensibility)
3
quiescent(adjective, dull, quiet, flat, indifferent)
3
run-down(adjective, weary, fatigued)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 24 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms>