3
seedy
3
slackened(adjective, clear, separate, free, easy)
3
sleepy(dull, still, idle, sluggish, late)
3
slow-going(adjective, slow, remiss, tardy)
3
slow-paced(adjective, slow, remiss, tardy)
3
sluttish
3
spineless
3
stamp out(verb, phrasal verb, insulation, refrigeration, fire extinction)
3
still(verb, adjective, calm, dull, quiet)
3
tolerant(adjective, soft, lenient)
3
unattached(adjective, clear, separate, free, easy)
3
unconcerned(noun, adjective, dull, careless, indifferent)
3
unfastened(adjective, clear, separate, free, easy)
3
unlax(verb, stop, calm, delay, rest)
3
unrestrained(adjective, open, light, easy, evil)
3
unsteady(adjective, loose, inactive, baggy)
3
unwilling(adjective, mood, lazy, unenthusiastic, averse)
2
abatement
2
abeyant(dull, sluggish, lazy, passive, inert)
2
allay(verb, calm, quiet, smooth, ease)
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APASmart Define. (2016). slack thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/slack/thesaurus/synonyms
ChicagoSmart Define. 2016. "slack thesaurus" https://smartdefine.org/slack/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, slack thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/slack/thesaurus/synonyms>.
MLASmart Define. "slack thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/slack/thesaurus/synonyms>