103 entries under dull topic. ×

38
naive(adjective, gentle, clean, honest)
22
stupid(adjective, characteristic, weak, slow)
18
common(adjective, mean, lower, poor)
18
foolish(adjective, characteristic, weak, slight)
13
dim-witted(adjective, slow, foolish, stupid)
13
dumb(adjective, slow, silly, foolish)
12
brainless(adjective, characteristic, weak, slow)
12
unintelligent(adjective, weak, slight, slow)
11
feeble-minded(adjective, ability, slow, offensive)
11
ignorant(adjective, characteristic, open, slight)
11
dense(adjective, characteristic, slow, silly)
11
inane(adjective, characteristic, slight, slow)
10
half-witted(adjective, weak, ability, slow)
10
homespun(adjective, plain, informal, coarse)
10
moronic(adjective, weak, slow, silly)
10
simple-minded(adjective, ability, honest, slow)
10
slow(adjective, light, easy, ability)
10
thick(adjective, slow, silly, foolish)
9
backward(adjective, quiet, ability, slow)
9
commonplace(adjective, mean, lower, poor)
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APASmart Define. (2016). simple thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/simple/thesaurus/synonyms
ChicagoSmart Define. 2016. "simple thesaurus" https://smartdefine.org/simple/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, simple thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/simple/thesaurus/synonyms>.
MLASmart Define. "simple thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/simple/thesaurus/synonyms>