170 entries under sluggish topic. ×

2
lagging(adjective, slow, careless, indifferent, idle)
2
latent(lazy, listless, motionless, unmoving)
2
lymphatic(lazy, listless, lethargic, languid)
2
motionless(adjective, cold, still, idle)
2
not bright(expression, adjective, idiom, unintelligent)
2
remiss(careless, stupid, idle, inactivity)
2
slow-moving(adjective, slow, careless, indifferent, idle)
2
slumberous(noun, adjective, quiet, slow, heavy)
2
static(still, idle, lifeless, lazy)
2
unenthusiastic(adjective, flat, warm, low, sad)
2
unintellectual(adjective, unintelligent, obtuse, plodding)
2
unready(adjective, careless, indifferent, idle, weary)
2
unused(idle, lazy, motionless, unmoving)
1
behindhand(late, lazy, negligent, behind)
1
abstracted(adjective, careless, relaxed, indifferent, apathetic)
1
asleep on the job(expression, idiom, idle, lazy)
1
careless(indifferent, stupid, idle, apathetic)
1
dallying(adjective, careless, indifferent, idle, weary)
1
disengaged(idle, lazy, motionless, unmoving)
1
do-nothing(idle, lazy, motionless, unmoving)
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APASmart Define. (2016). dull thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/dull/thesaurus/synonyms
ChicagoSmart Define. 2016. "dull thesaurus" https://smartdefine.org/dull/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, dull thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/dull/thesaurus/synonyms>.
MLASmart Define. "dull thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/dull/thesaurus/synonyms>