147 entries under dull topic. ×

1
drowsy(careless, idle, sluggish, lifeless)
1
enervated(adjective, weak, soft, lifeless)
1
even(adjective, quiet, flat, slow)
1
immobile(still, sluggish, lifeless, lazy)
1
in holding pattern(expression, idiom, sluggish, lazy)
1
inoperative(sluggish, lazy, passive, inert)
1
jobless(sluggish, lazy, motionless, unmoving)
1
laid-back(adjective, easy, slow, relaxed)
1
late(slow, remiss, tardy, behind)
1
loafing(careless, idle, sluggish, dubious)
1
low-key(sluggish, lazy, motionless, unmoving)
1
mooney(adjective, slow, heavy, sluggish)
1
mothballed(sluggish, lazy, motionless, unmoving)
1
motionless(verb, adjective, calm, subdue)
1
on hold(expression, sluggish, lazy, motionless)
1
ossified(sluggish, lazy, motionless, unmoving)
1
out of action(expression, idiom, sluggish, lazy)
1
out of commission(expression, idiom, sluggish, lazy)
1
out of it(expression, adjective, idiom, careless)
1
out of service(expression, idiom, sluggish, lazy)
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APASmart Define. (2016). slack thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/slack/thesaurus/synonyms
ChicagoSmart Define. 2016. "slack thesaurus" https://smartdefine.org/slack/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, slack thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/slack/thesaurus/synonyms>.
MLASmart Define. "slack thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/slack/thesaurus/synonyms>