87 entries under lethargic topic. ×

3
blah(adjective, dull, quiet, slow, informal)
3
indifferent(adjective, dull, quiet, beat, slow)
3
spiritless(adjective, dull, slow, relaxed, still)
3
stuporous
2
dopey(adjective, dull, quiet, slow, relaxed)
2
dazed(adjective, slow, tired, unsteady)
2
draggy(adjective, dull, quiet, low, slow)
2
flagging(adjective, dull, beat, slow, careless)
2
half asleep(expression, adjective, tired, dazed)
2
laggard(adjective, dull, quiet, easy, careless)
2
restful(adjective, tired, dazed, drowsy)
2
soothing(adjective, attractive, tired, dazed)
1
dilatory(adjective, dull, quiet, moderate, easy)
1
careless(dull, idle, sluggish, inactive)
1
dallying(dull, idle, sluggish, inactive)
1
dopy(adjective, tired, dazed, drowsy)
1
impassive(adjective, dull, slow, relaxed, still)
1
inattentive(dull, idle, sluggish, inactive)
1
insouciant(adjective, lifeless, languid, indolent)
1
laid-back(adjective, quiet, slow, relaxed, indifferent)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 29 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms>