48 entries under lethargic topic. ×

9
thoughtless(adjective, dull, wrong, careless, indifferent)
8
absent(adjective, dull, stupid, negative, usual)
8
dull(adjective, stupid, dead, sluggish, lifeless)
5
stupid(adjective, dull, wrong, indifferent, silly)
4
lifeless(stale, languid, innocuous, indolent)
2
inattentive(languid, indolent, incogitancy)
2
indolent
2
neutral(adjective, cold, aloof, lifeless)
2
passive(languid, indolent)
2
slack(lifeless, inactive, languid, sleepy)
2
uninterested(adjective, dull, sluggish, limp)
1
abstracted(adjective, indifferent, blank, languid)
1
dormant(lifeless, inactive, slack, languid)
1
heedless(adjective, dull, careless, stupid, thoughtless)
1
inactive(adjective, slack, languid, indolent)
1
inanimate(adjective, dull, stupid, sluggish, lifeless)
1
indifferent(adjective, blank, languid, indolent)
1
inert(inactive, slack, languid, indolent)
1
limp(adjective, dull, tasteless, sluggish, lifeless)
1
lymphatic(adjective, dull, stupid, sluggish, lifeless)
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APASmart Define. (2015). vacant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/vacant/thesaurus/synonyms
ChicagoSmart Define. 2015. "vacant thesaurus" https://smartdefine.org/vacant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, vacant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/vacant/thesaurus/synonyms>.
MLASmart Define. "vacant thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/vacant/thesaurus/synonyms>