255 entries under careless topic. ×

3
slipshod(adjective, indifferent, casual, thoughtless)
3
slovenly(adjective, indifferent, sloppy, inattentive)
3
undiplomatic(adjective, rude, thoughtless, unkind)
3
undiscerning(adjective, indifferent, apathetic, unconcerned)
3
unwitting(adjective, unconcerned, sloppy, ignorant)
3
venturesome(adjective, wild, thoughtless, impulsive)
3
woolgathering(adjective, remote, vague, sloppy)
2
airheaded(adjective, remote, vague, sloppy)
2
bemused(adjective, remote, vague, sloppy)
2
bored(adjective, dull, indifferent, apathetic)
2
capricious(adjective, free, easy, wild)
2
chance(adjective, useless, erratic, frivolous)
2
crazy(adjective, silly, stupid, unthinking)
2
delinquent(adjective, slow, indifferent, coarse)
2
dizzy(adjective, wild, silly, stupid)
2
frivolous(adjective, free, wild, silly)
2
gaga(adjective, silly, unsteady, inconstant)
2
headstrong(adjective, thoughtless, impulsive, stubborn)
2
immature(thoughtless, impulsive, reckless, hasty)
2
inane(adjective, stupid, unthinking, obtuse)
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APASmart Define. (2016). heedless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heedless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heedless thesaurus" https://smartdefine.org/heedless/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heedless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heedless/thesaurus/synonyms>.
MLASmart Define. "heedless thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/heedless/thesaurus/synonyms>