2
flagging(adjective, dull, beat, slow, careless)
2
frazzled(adjective, weary, fatigued)
2
half asleep(expression, adjective, tired, lethargic, dazed)
2
heavy-eyed
2
heavy-lidded
2
heavy with sleep(expression, idiom, inactivity)
2
immobile(adjective, dull, still, idle, sluggish)
2
jaded(adjective, beat, weary, tired, stale)
2
laggard(adjective, dull, quiet, easy, careless)
2
low(dull, late, behind)
2
peaceful(adjective, state, feeling, tranquility)
2
restful(adjective, tired, lethargic, dazed, drowsy)
2
sick(adjective, beat, gloomy, depressed, tired)
2
sleepful
2
soothing(adjective, attractive, tired, lethargic, dazed)
2
static(adjective, dull, quiet, flat, indifferent)
2
stretchy(adjective, dull, stupid, idle, weary)
2
tame(dull, late, insensibility, behind)
2
tedious(dull, late, behind)
2
toilsome(adjective, weary)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 25 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms>