78 entries under foolish topic. ×

11
imbecilic(adjective, dull, simple, slow, silly)
11
inane(adjective, dull, simple, slow, silly)
11
stolid(adjective, dull, simple, slow)
9
silly(adjective, stupid, crazy, vague)
9
crazy(adjective, impulsive, insane, unintelligent)
9
nonsensical(adjective, dull, stupid, half-baked)
9
thick-witted(adjective, ability, stupid, crazy)
9
unintelligent(adjective, dull, simple, slow, silly)
8
blockheaded(adjective, dull, simple, ability, slow)
8
dimwitted(adjective, dull, simple, slang, ability)
8
loony(adjective, impractical, unintelligent, half-baked)
8
witless(adjective, dull, simple, slow, silly)
7
ignorant(adjective, dull, simple, slow, silly)
6
absurd(adjective, impractical, unintelligent, half-baked)
6
empty-headed(adjective, simple, silly, stupid)
6
daft(adjective, simple, slow, silly)
6
half-baked(adjective, dull, simple, slow, silly)
6
imbecile(adjective, dull, simple, silly)
6
senseless(adjective, dull, simple, slow, silly)
5
dotty
10 years ago|23k views|share |citing 
APASmart Define. (2016). dumb thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms
ChicagoSmart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, dumb thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>.
MLASmart Define. "dumb thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms>