Synonyms|427Antonyms|150|Broader|0Narrower|0Related|2k

128 entries under adjective topic. ×

1
cracked(wild, silly, foolish, stupid)
1
deranged(wild, silly, foolish, stupid)
1
devil-may-care(careless, wild, foolish, immoral)
1
ditzy(careless, inconstant, giddy)
1
dopey(knowledge, slang, ability)
1
eccentric(keen, warm, wild, strange)
1
erratic(careless, wild, silly, foolish)
1
fickle(careless, excited, foolish, unstable)
1
headstrong(careless, bold, thoughtless, impulsive)
1
ill-considered(careless, silly, foolish, trivial)
1
impetuous(careless, bold, thoughtless, impulsive)
1
inconstant(careless, unstable, unreliable, changeable)
1
light-headed(silly, faint)
1
light-minded
1
lighthearted
1
nuts(wild, silly, foolish, stupid)
1
odd(wild, strange, silly, foolish)
1
precipitant(careless, thoughtless, impulsive, rash)
1
precipitate(careless, wild, bold, thoughtless)
1
temerarious(careless, wild, bold, thoughtless)
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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>