73 entries under stupid topic. ×

9
simple(adjective, dull, slow, silly, foolish)
8
feeble-minded(adjective, simple, slow, foolish)
7
foolish(adjective, dull, simple, slow, silly)
7
mindless(adjective, dull, simple, silly, foolish)
6
asinine(adjective, silly, foolish, unreasonable)
6
weak-minded(adjective, dull, slow)
6
witless(adjective, dull, simple, slow, silly)
5
brainless(adjective, dull, simple, slow, silly)
5
fatuous(adjective, foolish)
5
oafish(adjective, dull, slow)
5
soft(adjective, silly, green, fat)
5
thick-witted(adjective, ability)
4
backward(adjective, dull, simple, slow, silly)
4
idiotic(adjective, dull, simple, slow, silly)
4
ignorant(adjective, dull, simple, slow, silly)
4
silly(adjective, unreasonable, green, fat)
3
imbecile(adjective, dull, simple, silly, foolish)
3
simple-minded(adjective, simple, slow, silly, foolish)
2
dimwitted(adjective, dull, simple, slang, ability)
2
addled(adjective, simple, slow, sluggish)
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APASmart Define. (2016). thick thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/thick/thesaurus/synonyms
ChicagoSmart Define. 2016. "thick thesaurus" https://smartdefine.org/thick/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, thick thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/thick/thesaurus/synonyms>.
MLASmart Define. "thick thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/thick/thesaurus/synonyms>