95 entries under lethargic topic. ×

8
stagnant(adjective, calm, quiet, smooth, gentle)
8
stiff(adjective, dull, slow, informal, cold)
7
dormant(adjective, calm, dull, quiet, gentle)
7
indolent(adjective, dull, slow, careless, indifferent)
7
lazy(adjective, dull, slow, still, idle)
7
leaden(adjective, dull, soft, obscure, flat)
6
blah(adjective, calm, dull, quiet, weak)
6
indifferent(adjective, calm, dull, quiet, flat)
6
slack(adjective, dull, quiet, flat, slow)
6
tired(adjective, dull, careless, indifferent, dry)
5
dopey(adjective, dull, flat, low, sad)
5
lumpish(adjective, dull, slow, heavy, sluggish)
5
unresponsive(adjective, calm, dull, quiet, flat)
4
benumbed(adjective, numb, insensible, comatose)
4
comatose(adjective, dull, slow, careless, indifferent)
4
draggy(adjective, dull, quiet, weak, flat)
4
enervated(adjective, dull, flat, low, sad)
4
faint(adjective, weak, feeble, living)
4
impassive(adjective, calm, dull, tough, slow)
4
somnolent(adjective, dull, careless, indifferent, idle)
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APASmart Define. (2015). lifeless thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/lifeless/thesaurus/synonyms
ChicagoSmart Define. 2015. "lifeless thesaurus" https://smartdefine.org/lifeless/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, lifeless thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/lifeless/thesaurus/synonyms>.
MLASmart Define. "lifeless thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/lifeless/thesaurus/synonyms>