255 entries under careless topic. ×

2
indolent(adjective, casual, lethargic, languid)
2
inexpedient(adjective, foolish, thoughtless, rash)
2
instinctive(thoughtless, inconsiderate)
2
involuntary(adjective, unthinking, superficial, dutiful)
2
moony(adjective, silly, foolish, remote)
2
out to lunch(expression, adjective, idiom, unconcerned)
2
slow(adjective, lethargic, languid, negligent)
2
stupid(adjective, dull, wild, silly)
2
superficial(adjective, quick, impulsive, reckless)
2
thriftless(adjective, free, wild, extravagant)
2
unintended(thoughtless, inconsiderate)
2
unintentional(adjective, reckless, unwitting, accidental)
2
unnoticing(adjective, indifferent, apathetic, unconcerned)
2
unobserving(adjective, indifferent, apathetic, distracted)
2
unpremeditated(thoughtless, inconsiderate)
2
untactful(rude, thoughtless, impulsive, aggressive)
2
unvigilant(adjective, bold, thoughtless, impulsive)
2
weak(adjective, feature, state, trait)
1
amnemonic(adjective, vague, sloppy, inattentive)
1
amnesic(adjective, unconcerned, sloppy, ignorant)
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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>