65 entries under sleepy topic. ×

57
slow(adjective, dull, quiet, increase, weak)
40
languorous(adjective, dull, hard, weak, easy)
35
torpid(adjective, action, dull, quiet, weak)
34
inactive(adjective, action, calm, dull, quiet)
33
leaden(adjective, dull, hard, weak, easy)
31
listless(adjective, calm, dull, quiet, weak)
30
lazy(adjective, action, dull, weak, easy)
30
lethargic(adjective, action, calm, dull, quiet)
29
languid(adjective, dull, quiet, weak, easy)
27
inert(adjective, calm, dull, quiet, weak)
27
indolent(adjective, action, dull, quiet, simple)
18
apathetic(adjective, calm, dull, quiet, weak)
17
phlegmatic(adjective, calm, dull, quiet, weak)
15
lackadaisical(adjective, dull, quiet, weak, easy)
14
leisurely(adjective, adverb, dull, quiet, weak)
13
drowsy(adjective, dull, quiet, easy, slow)
12
indifferent(adjective, calm, dull, weak, easy)
12
supine(adjective, dull, quiet, weak, easy)
12
weary(adjective, dull, weak, easy, slow)
11
comatose(adjective, dull, quiet, weak, easy)
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APASmart Define. (2016). sluggish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sluggish/thesaurus/synonyms
ChicagoSmart Define. 2016. "sluggish thesaurus" https://smartdefine.org/sluggish/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sluggish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sluggish/thesaurus/synonyms>.
MLASmart Define. "sluggish thesaurus" 1 April 2016. Web. 25 September 2026. <https://smartdefine.org/sluggish/thesaurus/synonyms>