586 entries under adjective topic. ×

52
sluggish(dull, quiet, increase, weak)
34
dull(verb, stop, upset, characteristic)
30
stupid(characteristic, dull, simple, flat)
26
lazy(dull, weak, easy, relaxed)
24
inactive(action, dull, quiet, cool)
24
slack(verb, calm, dull, quiet)
22
lethargic(state, dull, quiet, weak)
22
torpid(characteristic, dull, quiet, weak)
21
dense(characteristic, dull, simple, heavy)
21
leisurely(calm, dull, quiet, light)
20
listless(state, dull, quiet, cool)
20
slothful(dull, quiet, flat, careless)
20
backward(adverb, dull, time, simple)
19
tardy(adverb, dull, careless, indifferent)
19
gradual(calm, quiet, smooth, soft)
18
apathetic(characteristic, dull, quiet, weak)
18
idle(dull, fail, diminish, decrease)
18
phlegmatic(characteristic, dull, weak, easy)
17
behindhand(adverb, time, property, sluggish)
17
sleepy(state, dull, quiet, careless)
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APASmart Define. (2016). slow thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/slow/thesaurus/synonyms
ChicagoSmart Define. 2016. "slow thesaurus" https://smartdefine.org/slow/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, slow thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/slow/thesaurus/synonyms>.
MLASmart Define. "slow thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/slow/thesaurus/synonyms>