178 entries under dull topic. ×

14
lifeless(adjective, calm, flat, slow)
14
somnolent(adjective, quiet, slow, careless)
13
passive(adjective, calm, flat, careless)
13
tired(adjective, slow, careless, indifferent)
12
weary(adjective, weak, easy, slow)
11
comatose(adjective, quiet, weak, easy)
11
enervated(adjective, weak, easy, slow)
11
supine(adjective, quiet, weak, easy)
10
dilatory(adjective, quiet, easy, careless)
10
heavy(adjective, quiet, weak, easy)
10
slack(adjective, quiet, slow, careless)
9
dopey(adjective, action, quiet, weak)
9
unconcerned(adjective, calm, weak, easy)
8
dreamy(adjective, quiet, easy, slow)
8
impassive(adjective, calm, weak, easy)
8
leaden(adjective, quiet, weak, easy)
8
spiritless(adjective, weak, easy, slow)
8
stolid(adjective, calm, slow, indifferent)
8
uninterested(adjective, weak, easy, slow)
7
dense(adjective, slow, silly, stupid)
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APASmart Define. (2016). lethargic thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lethargic/thesaurus/synonyms
ChicagoSmart Define. 2016. "lethargic thesaurus" https://smartdefine.org/lethargic/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, lethargic thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lethargic/thesaurus/synonyms>.
MLASmart Define. "lethargic thesaurus" 4 January 2016. Web. 27 September 2026. <https://smartdefine.org/lethargic/thesaurus/synonyms>