99 entries under lethargic topic. ×

11
phlegmatic(adjective, dull, quiet, weak, easy)
11
supine(adjective, dull, quiet, weak, easy)
10
indifferent(adjective, dull, quiet, weak, easy)
10
resting(adjective, idle, sluggish, lazy)
10
sleeping(adjective, action, dull, quiet, show)
9
asleep(adjective, action, calm, dull, quiet)
9
lackadaisical(adjective, dull, quiet, weak, easy)
9
somnolent(adjective, action, dull, quiet, slow)
7
heavy(adjective, dull, quiet, weak, easy)
6
comatose(adjective, dull, quiet, weak, easy)
6
leaden(adjective, dull, quiet, weak, easy)
6
spiritless(adjective, dull, quiet, weak, easy)
5
dilatory(adjective, dull, quiet, moderate, easy)
5
lax(adjective, action, sluggish, lazy)
5
neutral(adjective, quiet, cool, indifferent, still)
5
unconcerned(adjective, dull, quiet, cool, weak)
5
unresponsive(adjective, dull, quiet, flat, slow)
4
limp(adjective, action, dull, weak, easy)
4
shiftless(adjective, dull, idle, sluggish, lazy)
4
uninterested(adjective, dull, weak, easy, slow)
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APASmart Define. (2015). inactive thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/inactive/thesaurus/synonyms
ChicagoSmart Define. 2015. "inactive thesaurus" https://smartdefine.org/inactive/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, inactive thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/inactive/thesaurus/synonyms>.
MLASmart Define. "inactive thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/inactive/thesaurus/synonyms>