1
loose(adjective, false, reckless)
1
madcap
1
mechanic
1
munificent(adjective, mean, generous, giving)
1
nonchalant(hard, concerned)
1
oblivious
1
over smart
1
passing
1
prodigal(adjective, wasteful)
1
profligate(adjective, wasteful)
1
shortsighted(adjective, unmindful)
1
slovenly
1
spendthrift
1
stupid(adjective, sharp, intelligent)
1
unashamed(good, gentle)
1
uncareful(adjective, false, loose, reckless)
1
uncaring(adjective, false, loose, reckless)
1
undiscriminating
1
uneconomical
1
unguarded(adjective, thoughtless, unwary)
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APASmart Define. (2016). careful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/careful/thesaurus/antonyms
ChicagoSmart Define. 2016. "careful thesaurus" https://smartdefine.org/careful/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, careful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/careful/thesaurus/antonyms>.
MLASmart Define. "careful thesaurus" 24 January 2016. Web. 29 September 2026. <https://smartdefine.org/careful/thesaurus/antonyms>