376 entries under adjective topic. ×

18
sleepy(dull, quiet, low, slow)
17
phlegmatic(calm, dull, quiet, weak)
17
slack(dull, quiet, increase, flat)
16
lifeless(calm, dull, quiet, gentle)
15
lackadaisical(dull, quiet, weak, easy)
15
passive(calm, dull, quiet, gentle)
14
leisurely(adverb, dull, quiet, weak)
13
drowsy(dull, quiet, easy, slow)
13
stagnant(calm, dull, quiet, moderate)
12
dormant(calm, dull, quiet, gentle)
12
indifferent(calm, dull, weak, easy)
12
supine(dull, quiet, weak, easy)
12
tardy(adverb, dull, quiet, low)
12
weary(dull, weak, easy, slow)
11
comatose(dull, quiet, weak, easy)
11
dilatory(adverb, dull, quiet, moderate)
11
heavy(dull, quiet, weak, easy)
10
dopey(action, dull, quiet, weak)
10
laggard(adverb, dull, quiet, slow)
10
somnolent(dull, quiet, slow, careless)
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APASmart Define. (2016). sluggish thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sluggish/thesaurus/synonyms
ChicagoSmart Define. 2016. "sluggish thesaurus" https://smartdefine.org/sluggish/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sluggish thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sluggish/thesaurus/synonyms>.
MLASmart Define. "sluggish thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/sluggish/thesaurus/synonyms>