93 entries under careless topic. ×

1
carefree(wild, thoughtless, daring, deed)
1
changeable(adjective, wild, excited, foolish)
1
determined(thoughtless, impulsive, reckless, hasty)
1
devil-may-care(adjective, wild, foolish, immoral)
1
ditzy(adjective, inconstant, giddy)
1
erratic(adjective, wild, silly, foolish)
1
feckless(wild, immoral, thoughtless, negligent)
1
fickle(adjective, excited, foolish, unstable)
1
fiery(thoughtless, impulsive, reckless, hasty)
1
frenzied(thoughtless, impulsive, reckless, hasty)
1
furious(thoughtless, impulsive, reckless, hasty)
1
hasty(wild, thoughtless, impulsive, reckless)
1
headstrong(adjective, bold, thoughtless, impulsive)
1
hotheaded(wild, silly, crazy, thoughtless)
1
ill-advised(weak, simple, wild, foolish)
1
ill-considered(adjective, silly, foolish, trivial)
1
immature(silly, stupid, thoughtless, impulsive)
1
impetuous(adjective, bold, thoughtless, impulsive)
1
impulsive(silly, crazy, thoughtless, unreliable)
1
inconstant(adjective, unstable, unreliable, changeable)
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APASmart Define. (2015). harebrained thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, harebrained thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>.
MLASmart Define. "harebrained thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms>