94 entries under inactive topic. ×

6
lifeless(adjective, dull, quiet, flat, slow)
5
flexible(adjective, loose, lifeless, baggy)
5
infirm(adjective, weak, weakness, loose, lifeless)
5
slow-moving(adjective, dull, quiet, easy, slow)
5
stagnant(adjective, dull, quiet, moderate, flat)
4
impotent(adjective, still, lifeless, passive)
4
lagging(dull, slow, careless, sluggish, dubious)
4
languorous(adjective, dull, slow, careless, indifferent)
4
leaden(adjective, dull, quiet, moderate, easy)
4
leisurely(adjective, easy, slow, relaxed, loose)
4
phlegmatic(adjective, dull, quiet, moderate, easy)
3
flimsy(adjective, loose, baggy)
3
hebetudinous(adjective, dull, slow, heavy, sluggish)
3
procrastinating(dull, slow, careless, sluggish, late)
3
quiescent(adjective, dull, still, sluggish, lazy)
3
sleepy(dull, still, idle, sluggish, late)
3
unconcerned(noun, adjective, dull, careless, indifferent)
3
unsteady(adjective, loose, baggy)
2
blah(adjective, dull, quiet, flat, slow)
2
comatose(adjective, dull, slow, careless, indifferent)
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APASmart Define. (2016). slack thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slack/thesaurus/synonyms
ChicagoSmart Define. 2016. "slack thesaurus" https://smartdefine.org/slack/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, slack thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slack/thesaurus/synonyms>.
MLASmart Define. "slack thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/slack/thesaurus/synonyms>