246 entries under dull topic. ×

16
lifeless(adjective, calm, quiet, gentle)
15
lackadaisical(adjective, quiet, weak, easy)
15
passive(adjective, calm, quiet, gentle)
14
leisurely(adjective, adverb, quiet, weak)
13
drowsy(adjective, quiet, easy, slow)
13
stagnant(adjective, calm, quiet, moderate)
12
dormant(adjective, calm, quiet, gentle)
12
indifferent(adjective, calm, weak, easy)
12
supine(adjective, quiet, weak, easy)
12
tardy(adjective, adverb, quiet, low)
12
weary(adjective, weak, easy, slow)
11
comatose(adjective, quiet, weak, easy)
11
dilatory(adjective, adverb, quiet, moderate)
11
heavy(adjective, quiet, weak, easy)
10
dopey(adjective, action, quiet, weak)
10
laggard(adjective, adverb, quiet, slow)
10
somnolent(adjective, quiet, slow, careless)
10
tired(adjective, weak, slow, careless)
9
flat(adjective, calm, quiet, slow)
8
dragging(adjective, slow, inactive, slack)
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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>