84 entries under simple topic. ×

20
laughable(adjective, dull, silly, stupid)
20
unwise(adjective, weak, wrong, careless)
18
daft(adjective, weak, wild, strange)
18
imprudent(adjective, weak, careless, wild)
18
nutty(adjective, weak, wrong, wild)
18
unreasonable(adjective, weak, wrong, careless)
17
dopey(adjective, dull, knowledge, slang)
17
dull(adjective, rough, careless, silly)
17
ill-advised(adjective, dull, weak, careless)
16
mindless(adjective, dull, wrong, ability)
15
wacky(adjective, weak, wrong, knowledge)
14
loony(adjective, weak, wrong, knowledge)
14
unintelligent(adjective, dull, weak, slight)
14
witless(adjective, dull, weak, ability)
13
injudicious(adjective, weak, wrong, careless)
12
dotty(adjective, weak, strange, silly)
12
ill-considered(adjective, weak, careless, silly)
12
imbecile(adjective, dull, silly, stupid)
12
zany(adjective, weak, knowledge, ability)
11
doltish(adjective, dull, weak, stupid)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>