127 entries under sluggish topic. ×

5
dopey(adjective, dull, weak, easy, flat)
5
laid-back(adjective, calm, dull, cool, weak)
5
moony(adjective, dull, weak, easy, slow)
5
negligent(adjective, calm, quiet, cool, easy)
5
sleepy(adjective, dull, quiet, easy, slow)
5
tardy(dull, slow, careless, lazy)
4
lagging(adjective, dull, idle, dubious)
4
leisurely(adjective, dull, quiet, weak, easy)
4
lymphatic(adjective, action, weak, heavy, still)
4
somnolent(adjective, dull, careless, relaxed, indifferent)
4
stolid(adjective, dull, weary, apathetic, tired)
4
tired(adjective, dull, slow, careless, indifferent)
4
unhurried(adjective, dull, quiet, weak, easy)
3
heavy(adjective, dull, quiet, weak, easy)
3
relaxed(adjective, calm, cool, slow, careless)
3
weak(adjective, dull, strong, easy, slow)
2
blah(adjective, dull, weak, easy, flat)
2
comatose(adjective, dull, weak, easy, slow)
2
dallying(dull, idle, dubious, lazy)
2
debilitated(adjective, dull, uncertain, feeble, weary)
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APASmart Define. (2016). lackadaisical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/lackadaisical/thesaurus/synonyms
ChicagoSmart Define. 2016. "lackadaisical thesaurus" https://smartdefine.org/lackadaisical/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, lackadaisical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/lackadaisical/thesaurus/synonyms>.
MLASmart Define. "lackadaisical thesaurus" 2 March 2016. Web. 29 September 2026. <https://smartdefine.org/lackadaisical/thesaurus/synonyms>