144 entries under silly topic. ×

22
stupid(adjective, characteristic, dull, weak, slow)
21
innocent(noun, adjective, gentle, clean, honest)
18
foolish(adjective, characteristic, dull, weak, slight)
15
dull(adjective, ability, slow, plain, pure)
15
fatuous(adjective, weak, foolish, stupid)
13
dumb(adjective, dull, slow, foolish)
13
soft(adjective, light, weak, easy, gentle)
12
brainless(adjective, characteristic, dull, weak, slow)
12
unintelligent(adjective, dull, weak, slight, slow)
11
ignorant(adjective, characteristic, dull, open, slight)
11
dense(adjective, characteristic, dull, slow)
11
inane(adjective, characteristic, dull, slight, slow)
10
asinine(adjective, characteristic, weak, foolish)
10
half-witted(adjective, dull, weak, ability, slow)
10
moronic(adjective, dull, weak, slow)
10
simple-minded(adjective, dull, ability, honest, slow)
10
slow(adjective, dull, light, easy, ability)
10
thick(adjective, dull, slow, foolish)
9
backward(adjective, dull, quiet, ability, slow)
9
credulous(adjective, pure, stupid, intelligent)
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APASmart Define. (2016). simple thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/simple/thesaurus/synonyms
ChicagoSmart Define. 2016. "simple thesaurus" https://smartdefine.org/simple/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, simple thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/simple/thesaurus/synonyms>.
MLASmart Define. "simple thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/simple/thesaurus/synonyms>