48 entries under impractical topic. ×

17
crazy(adjective, weak, simple, knowledge, ability)
14
silly(adjective, weak, simple, knowledge, ability)
12
insane(adjective, weak, simple, knowledge, ability)
9
frivolous(adjective, ability, careless, excited, silly)
9
dizzy(adjective, slang, ability, careless, excited)
9
foolish(adjective, weak, simple, knowledge, ability)
8
flighty(adjective, ability, careless, excited, silly)
7
absurd(adjective, weak, simple, knowledge, ability)
7
empty-headed(adjective, ability, careless, silly, foolish)
7
loony(adjective, weak, simple, knowledge, ability)
7
preposterous(adjective, weak, great, simple, knowledge)
6
giddy(adjective, ability, careless, excited, silly)
5
balmy(adjective, knowledge, slang, ability, wild)
5
featherbrained(adjective, ability, careless, silly, foolish)
5
idiotic(adjective, weak, simple, knowledge, ability)
4
crackpot(half-baked, doomed)
4
ridiculous(adjective, weak, simple, wild, strange)
3
brainless(adjective, weak, simple, careless, silly)
3
daft(adjective, weak, simple, wild, silly)
3
imprudent(adjective, weak, simple, careless, wild)
<123>
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APASmart Define. (2015). harebrained thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, harebrained thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>.
MLASmart Define. "harebrained thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms>