376 entries under adjective topic. ×

57
slow(dull, quiet, increase, weak)
40
languorous(dull, hard, weak, easy)
35
torpid(action, dull, quiet, weak)
34
inactive(action, calm, dull, quiet)
33
leaden(dull, hard, weak, easy)
31
listless(calm, dull, quiet, weak)
30
lazy(action, dull, weak, easy)
30
lethargic(action, calm, dull, quiet)
29
languid(dull, quiet, weak, easy)
29
lumpish(dull, hard, difficult, slow)
28
slothful(action, dull, quiet, easy)
27
inert(calm, dull, quiet, weak)
27
indolent(action, dull, quiet, simple)
24
dull(calm, dull, increase, weak)
24
idle(action, calm, dull, quiet)
24
plodding(hard, difficult, slow, deliberate)
23
ponderous(dull, hard, difficult, complex)
20
sad(hard, difficult, unhappy, complex)
20
stale(hard, difficult, complex)
18
apathetic(calm, dull, quiet, weak)
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APASmart Define. (2016). sluggish thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sluggish/thesaurus/synonyms
ChicagoSmart Define. 2016. "sluggish thesaurus" https://smartdefine.org/sluggish/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, sluggish thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sluggish/thesaurus/synonyms>.
MLASmart Define. "sluggish thesaurus" 1 April 2016. Web. 22 September 2026. <https://smartdefine.org/sluggish/thesaurus/synonyms>