89 entries under lethargic topic. ×

1
unpersevering(dull, idle, sluggish, inactive)
1
vacant(inactive, slack, languid, indolent)
0
absent(languid, indolent)
0
easygoing(sluggish, lazy, languid, indolent)
0
heedless(languid, indolent)
0
laid back(expression, adjective, dull, halfhearted)
0
mopish(languid, indolent)
0
thoughtless(languid, indolent)
0
without energy(expression, languid, indolent)
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APASmart Define. (2015). inert thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inert/thesaurus/synonyms
ChicagoSmart Define. 2015. "inert thesaurus" https://smartdefine.org/inert/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, inert thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inert/thesaurus/synonyms>.
MLASmart Define. "inert thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/inert/thesaurus/synonyms>