174 entries under foolish topic. ×

11
meaningless(adjective, dull, simple, slight, use)
11
pointless(adjective, dull, weak, simple, value)
9
brainless(adjective, dull, simple, slow, silly)
9
empty-headed(adjective, slight, silly, stupid)
9
goofy(adjective, silly, stupid, fantastic)
8
futile(adjective, dull, simple, value, silly)
8
insane(adjective, simple, crazy, fantastic)
8
loony(adjective, stupid, fantastic, senseless)
8
simple(adjective, dull, slight, slow, silly)
8
thoughtless(adjective, careless, indifferent, stupid)
7
unintelligent(adjective, dull, simple, slight, silly)
7
dotty
7
imbecile(adjective, dull, simple, silly)
7
irrational(adjective, careless, wild, silly)
7
nutty(adjective, wild, silly, stupid)
7
unreasonable(adjective, simple, poor, careless, silly)
7
unwise(adjective, simple, careless, wild, silly)
6
dim-witted(adjective, stupid)
6
ignorant(adjective, simple, slight, silly)
6
inept(poor, careless, stupid, rash)
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APASmart Define. (2015). inane thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>