107 entries under simple topic. ×

6
lumpish(adjective, dull, slow, heavy)
5
ignorant(adjective, dull, rough, slow)
5
jerky(adjective, weak, silly, foolish)
5
short-sighted(adjective, weak, silly, foolish)
5
simple-minded(adjective, dull, slow, informal)
4
inept(adjective, dull, sharp, flat)
4
cockamamie(weak, foolish, unreasonable, illogical)
4
empty(adjective, dull, silly, crazy)
4
feebleminded(adjective, weak, silly, foolish)
4
gullible(adjective, dull, slow, silly)
4
imprudent(adjective, weak, sharp, rough)
4
inconsistent(adjective, wrong, silly, foolish)
4
shallow(adjective, dull, slow, silly)
4
simpleminded(adjective, dull, silly, foolish)
4
trivial(adjective, dull, offensive, rude)
4
weak(adjective, dull, slow, silly)
3
blockish
3
dumbbell(noun, adjective, dull, fool)
3
harebrained(adjective, weak, wild, silly)
3
hebetudinous(adjective, action, dull, ability)
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APASmart Define. (2016). stupid thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/stupid/thesaurus/synonyms
ChicagoSmart Define. 2016. "stupid thesaurus" https://smartdefine.org/stupid/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, stupid thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stupid/thesaurus/synonyms>.
MLASmart Define. "stupid thesaurus" 2 April 2016. Web. 24 September 2026. <https://smartdefine.org/stupid/thesaurus/synonyms>