105 entries under sluggish topic. ×

3
blah(adjective, dull, quiet, slow, informal)
3
indifferent(adjective, dull, quiet, beat, slow)
3
jobless(adjective, dull, idle, lazy)
3
quiescent(adjective, dull, quiet, flat, indifferent)
3
sedentary(adjective, dull, idle, lazy)
3
slack(dull, still, idle, late)
3
spiritless(adjective, dull, slow, relaxed, still)
3
stagnant(dull, late, lazy, listless)
2
dopey(adjective, dull, quiet, slow, relaxed)
2
stupid(adjective, dull, cold, dead, senseless)
2
unemployed(adjective, dull, idle, lazy)
2
draggy(adjective, dull, quiet, low, slow)
2
flagging(adjective, dull, beat, slow, careless)
2
immobile(adjective, dull, still, idle)
2
laggard(adjective, dull, quiet, easy, careless)
2
static(adjective, dull, quiet, flat, indifferent)
2
stretchy(adjective, dull, stupid, idle, weary)
1
dilatory(adjective, dull, quiet, moderate, easy)
1
abeyant(adjective, dull, idle, lazy)
1
asleep on the job(expression, idiom, dull, idle)
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APASmart Define. (2016). sleepy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sleepy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sleepy thesaurus" https://smartdefine.org/sleepy/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sleepy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sleepy/thesaurus/synonyms>.
MLASmart Define. "sleepy thesaurus" 18 February 2016. Web. 28 September 2026. <https://smartdefine.org/sleepy/thesaurus/synonyms>