98 entries under stupid topic. ×

14
preposterous(adjective, characteristic, wrong, wild, foolish)
14
ridiculous(adjective, characteristic, weak, simple, wild)
14
lunatic(adjective, characteristic, weak, simple, wild)
14
pointless(adjective, characteristic, simple, silly, foolish)
13
imbecilic(adjective, characteristic, weak, simple, silly)
13
boneheaded(adjective, characteristic, silly, impractical)
13
insensate(adjective, characteristic, ability, planned)
13
irrational(adjective, characteristic, weak, simple, wrong)
13
meaningless(adjective, characteristic, simple, silly)
11
birdbrained(adjective, characteristic, silly, foolish)
10
daft(adjective, characteristic, weak, simple, wild)
10
loony(adjective, characteristic, weak, simple, wild)
10
unreasonable(adjective, characteristic, weak, simple, silly)
10
lamebrained(adjective, characteristic, stupidity, foolishness)
9
batty(adjective, characteristic, wild, silly, foolish)
8
illogical(adjective, characteristic, simple, silly, sense)
8
unwise(adjective, characteristic, weak, simple, wild)
8
dippy(adjective, characteristic, weak, simple, silly)
7
cuckoo(adjective, characteristic, wrong, wild, silly)
7
dotty(adjective, characteristic, weak, simple, silly)
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APASmart Define. (2015). fatuous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fatuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "fatuous thesaurus" https://smartdefine.org/fatuous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, fatuous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fatuous/thesaurus/synonyms>.
MLASmart Define. "fatuous thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/fatuous/thesaurus/synonyms>