93 entries under lethargic topic. ×

8
indifferent(adjective, dull, slow, careless, relaxed)
8
lifeless(adjective, dull, slow, careless, indifferent)
8
passive(adjective, dull, quiet, easy, careless)
8
unhurried(adjective, mild, relaxed, tolerant)
7
leaden(adjective, quiet, easy, slow, relaxed)
6
laggard(noun, adjective, dull, quiet, easy)
6
leisurely
5
dopey(adjective, dull, slow, relaxed, heavy)
5
insensible(adjective, dull, slow, unfeeling, unemotional)
5
lumpish(adjective, dull, slow, heavy, sluggish)
5
sluggard(noun, adjective, action, dull, slow)
5
tired(adjective, dull, careless, indifferent, idle)
4
drowsy(adjective, dull, quiet, easy, careless)
4
drugged(adjective, tired, sleepy, dazed)
4
heavy(adjective, quiet, easy, slow, relaxed)
4
sleepy(adjective, dull, quiet, easy, careless)
4
slow-moving(adjective, dull, quiet, easy, slow)
4
spiritless(adjective, dull, slow, careless, relaxed)
4
stagnant(adjective, quiet, easy, slow, heavy)
3
benumbed
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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>