48 entries under simple topic. ×

17
crazy(adjective, weak, knowledge, ability)
14
silly(adjective, weak, knowledge, ability)
12
insane(adjective, weak, knowledge, ability)
9
foolish(adjective, weak, knowledge, ability)
8
mad(adjective, weak, knowledge, ability)
7
absurd(adjective, weak, knowledge, ability)
7
loony(adjective, weak, knowledge, ability)
7
preposterous(adjective, weak, great, knowledge)
5
dippy(adjective, weak, knowledge, slang)
5
idiotic(adjective, weak, knowledge, ability)
5
witless(adjective, weak, silly, foolish)
4
half-baked(adjective, weak, foolish, stupid)
4
nutty(adjective, weak, wild, silly)
4
ridiculous(adjective, weak, wild, strange)
4
wacky(adjective, weak, knowledge, slang)
3
brainless(adjective, weak, careless, silly)
3
daffy(adjective, weak, silly, foolish)
3
daft(adjective, weak, wild, silly)
3
fatuous(weak, silly, foolish, stupid)
3
half-witted(weak, silly, foolish, thoughtless)
<123>
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APASmart Define. (2015). harebrained thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, harebrained thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>.
MLASmart Define. "harebrained thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms>