78 entries under foolish topic. ×

1
chuckle-headed
1
deficient(adjective, dull, silly, stupid)
1
gullible(adjective, dull, simple, slow, silly)
1
harebrained(crazy, impulsive, insane, unintelligent)
1
ill-advised(dull, stupid, unintelligent, witless)
1
knuckle-headed
1
lame-brained
1
meaningless(adjective, dull, silly, stupid)
1
meat-headed
1
mentally handicapped(expression, silly, stupid)
1
pointless(dull, silly, stupid, unintelligent)
1
thick-headed(dull, silly, stupid, unintelligent)
1
unthinking(dull, silly, stupid, unintelligent)
0
foolhardy(crazy, insane, impractical, half-baked)
0
mentally deficient(expression, silly, stupid)
0
not intelligent(expression, silly, stupid)
0
squirrelly(crazy, insane)
0
very stupid(expression, crazy, insane)
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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>