118 entries under careless topic. ×

5
ill-judged(adjective, silly, thoughtless, rash)
4
brash(adjective, silly, crazy, thoughtless)
4
confused(adjective, stupid, unreasonable, thoughtless)
4
improper(adjective, wrong, offensive, rude)
4
unadvisable(adjective, thoughtless, rash, irresponsible)
4
unreasoning(stupid, unreasonable, thoughtless, irrational)
4
unstable(stupid, unreasonable, fantastic, unthinking)
4
unwary(adjective, stupid, thoughtless, impulsive)
4
vacant(adjective, indifferent, silly, stupid)
3
capricious(stupid, senseless, irrational, negligent)
3
headlong(adjective, stupid, thoughtless, impulsive)
3
impractical(adjective, silly, stupid, unreasonable)
3
improvident(adjective, stupid, thoughtless, impulsive)
3
impulsive(adjective, silly, crazy, thoughtless)
3
inexpedient(adjective, unreasonable, thoughtless, impulsive)
3
negligent(adjective, silly, thoughtless, senseless)
3
undiscerning(adjective, stupid, unthinking, obtuse)
3
wrong(adjective, stupid, crazy, unreasonable)
2
blind(adjective, stupid, thoughtless, unthinking)
2
devil-may-care(adjective, impulsive, reckless, negligent)
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APASmart Define. (2016). foolish thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/foolish/thesaurus/synonyms
ChicagoSmart Define. 2016. "foolish thesaurus" https://smartdefine.org/foolish/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, foolish thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/foolish/thesaurus/synonyms>.
MLASmart Define. "foolish thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/foolish/thesaurus/synonyms>