366 entries under dull topic. ×

13
humdrum(adjective, boring, tedious, dullness)
13
reduce(verb, stop, upset, calm, control)
13
slacken(verb, stop, calm, control)
12
drowsy(adjective, state, quiet, careless)
12
heavy(adjective, quiet, weak, easy)
12
lackadaisical(adjective, weak, easy, careless)
12
languorous(adjective, weak, easy, careless)
12
uninteresting(adjective, boring, tedious, dreary)
11
retarded(adjective, time, ability, offensive)
11
dim-witted(adjective, simple, foolish, stupid)
11
laggard(adjective, adverb, easy, careless)
11
remiss(adjective, careless, indifferent, deliberate)
11
simple(adjective, light, easy, ability)
11
soporific(adjective, weariness)
11
tiresome(adjective, boring, tedious, dreary)
11
unintelligent(adjective, simple, mind, think)
10
abate(verb, stop, calm, control)
10
lifeless(adjective, quiet, flat, informal)
10
moronic(adjective, simple, mind, think)
10
supine(adjective, state, weak, easy)
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APASmart Define. (2016). slow thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/slow/thesaurus/synonyms
ChicagoSmart Define. 2016. "slow thesaurus" https://smartdefine.org/slow/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, slow thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/slow/thesaurus/synonyms>.
MLASmart Define. "slow thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/slow/thesaurus/synonyms>