80 entries under heedless topic. ×

11
improvident(adjective, foolish, casual, bold, extravagant)
10
oblivious(noun, adjective, soft, indifferent, silly)
9
distrait(noun, adjective, cold, forget, remote)
9
unguarded(adjective, casual, thoughtless, impulsive, rash)
8
bold(adjective, violent, anxious, cheerful, worried)
8
brash(adjective, sharp, rough, wild, foolish)
8
hotheaded(adjective, wild, bold, thoughtless, impulsive)
6
distracted(noun, adjective, indifferent, anxious, worried)
6
precipitate(adjective, passionate, violent, wild, anxious)
6
unwatchful(adjective, cold, forget, bold, thoughtless)
5
abstracted(noun, adjective, indifferent, casual, apathetic)
4
ill-advised(adjective, wild, foolish, stupid, quick)
4
unconscious(adjective, indifferent, casual, apathetic, thoughtless)
3
absent(adjective, indifferent, apathetic, unconcerned, remote)
3
daydreaming(adjective, indifferent, silly, foolish, apathetic)
3
dreamy(adjective, indifferent, apathetic, unconcerned, remote)
3
ill-judged(adjective, foolish, bold, thoughtless, impulsive)
3
preoccupied(adjective, indifferent, apathetic, unconcerned, remote)
2
deaf(adjective, indifferent, unconcerned, ignorant, inattentive)
2
dreaming(adjective, remote, distracted, scatterbrained)
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APASmart Define. (2016). careless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/careless/thesaurus/synonyms
ChicagoSmart Define. 2016. "careless thesaurus" https://smartdefine.org/careless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, careless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/careless/thesaurus/synonyms>.
MLASmart Define. "careless thesaurus" 3 March 2016. Web. 25 September 2026. <https://smartdefine.org/careless/thesaurus/synonyms>