53 entries under foolish topic. ×

7
absurd(adjective, knowledge, ability, senseless)
7
silly(noun, adjective, knowledge, ability, fool)
6
loony(adjective, knowledge, ability, informal)
6
lunatic(adjective, knowledge, ability)
6
preposterous(adjective, knowledge, ability)
6
zany(adjective, knowledge, ability, informal, fool)
5
crazy(adjective, knowledge, ability, informal)
5
daft
5
harebrained(adjective, knowledge, ability)
5
insane(adjective, knowledge, ability)
5
simple(noun, adjective, weak, ability, fool)
4
asinine
4
fatuous
4
nonsensical(adjective, knowledge, ability)
4
senseless
4
stupid(adjective, informal)
3
brainless
3
dippy(adjective, knowledge, slang, ability)
3
dotty
3
fantastic
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APASmart Define. (2015). tomfool thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/tomfool/thesaurus/synonyms
ChicagoSmart Define. 2015. "tomfool thesaurus" https://smartdefine.org/tomfool/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, tomfool thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/tomfool/thesaurus/synonyms>.
MLASmart Define. "tomfool thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/tomfool/thesaurus/synonyms>