50 entries under lackluster topic. ×

8
passive(adjective, dull, quiet, easy, careless)
6
laggard(noun, adjective, dull, quiet, easy)
5
dopey(adjective, dull, slow, relaxed, heavy)
5
tired(adjective, dull, careless, indifferent, idle)
4
drowsy(adjective, dull, quiet, easy, careless)
4
heavy(adjective, quiet, easy, slow, relaxed)
4
sleepy(adjective, dull, quiet, easy, careless)
4
spiritless(adjective, dull, slow, careless, relaxed)
3
somnolent(adjective, dull, careless, relaxed, indifferent)
3
weary(adjective, dull, careless, relaxed, indifferent)
2
comatose(adjective, dull, slow, careless, relaxed)
2
dormant(adjective, dull, still, idle, weary)
2
stolid(adjective, simple, slow, stupid, still)
1
blah(adjective, dull, slow, relaxed, idle)
1
draggy(adjective, dull, slow, idle, weary)
1
enervated(adjective, dull, careless, relaxed, indifferent)
1
impassive(adjective, dull, slow, relaxed, still)
1
laid-back(adjective, calm, slow, mild, careless)
1
moony(adjective, careless, relaxed, indifferent, weary)
1
out of it(expression, adjective, idiom, dull, careless)
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APASmart Define. (2015). indolent thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/indolent/thesaurus/synonyms
ChicagoSmart Define. 2015. "indolent thesaurus" https://smartdefine.org/indolent/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, indolent thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/indolent/thesaurus/synonyms>.
MLASmart Define. "indolent thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/indolent/thesaurus/synonyms>