110 entries under sluggish topic. ×

2
drowsy(adjective, dull, quiet, easy, careless)
2
flagging(adjective, dull, careless, indifferent, weary)
2
impassive(adjective, dull, heavy, stupid, still)
2
inattentive(adjective, dull, careless, indifferent, apathetic)
2
lagging(adjective, dull, quiet, easy, careless)
2
moderate(verb, adjective, quiet, easy, slow)
2
neglectful(adjective, dull, careless, indifferent, apathetic)
2
negligent(adjective, quiet, moderate, easy, heavy)
2
out of commission(expression, adjective, idiom, dull)
2
somnolent(adjective, dull, careless, indifferent, weary)
2
stupid(adjective, weak, apathetic, incompetent)
2
unhurried(adjective, quiet, easy, heavy, deliberate)
1
asleep on the job(expression, idiom, dull, careless)
1
blah(adjective, dull, heavy, weary, apathetic)
1
dallying(adjective, dull, careless, indifferent, weary)
1
debilitated(adjective, dull, heavy, stupid, weary)
1
dopey(adjective, dull, heavy, stupid, weary)
1
draggy(adjective, dull, heavy, weary, apathetic)
1
dreamy(adjective, dull, quiet, easy, careless)
1
enervated(adjective, dull, careless, heavy, indifferent)
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APASmart Define. (2015). idle thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/idle/thesaurus/synonyms
ChicagoSmart Define. 2015. "idle thesaurus" https://smartdefine.org/idle/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, idle thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/idle/thesaurus/synonyms>.
MLASmart Define. "idle thesaurus" 23 October 2015. Web. 27 September 2026. <https://smartdefine.org/idle/thesaurus/synonyms>