82 entries under negligent topic. ×

8
unconscious(adjective, careless, indifferent, apathetic, thoughtless)
7
adventurous(adjective, careless, wild, thoughtless, impulsive)
7
hotheaded(adjective, rude, careless, wild, silly)
7
ill-advised(adjective, rude, violent, careless, wild)
7
listless(adjective, energy, sharp, rude, careless)
6
apathetic(noun, adjective, dull, sharp, rude)
5
daredevil(adjective, wild, thoughtless, deed)
5
daring(adjective, careless, wild, thoughtless, impulsive)
5
lax(adjective, feature, state, careless, indifferent)
5
slack(noun, adjective, careless, indifferent, loose)
4
lazy(adjective, slow, careless, indifferent, thoughtless)
4
mooning(adjective, careless, silly, foolish, remote)
4
unenlightened(adjective, unconcerned, ignorant, unconscious)
4
unsuspecting(adjective, thoughtless, unconcerned, ignorant, unconscious)
3
daydreaming(adjective, careless, silly, foolish, remote)
3
derelict(adjective, careless, indifferent, coarse, unconcerned)
3
desperate(wild, thoughtless, deed, irresponsible)
3
slipshod(adjective, careless, indifferent, casual, thoughtless)
3
uninformed(adjective, thoughtless, unconcerned, ignorant, unconscious)
3
unknowing(adjective, unconcerned, ignorant, unconscious)
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APASmart Define. (2016). heedless thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/heedless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heedless thesaurus" https://smartdefine.org/heedless/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, heedless thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/heedless/thesaurus/synonyms>.
MLASmart Define. "heedless thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/heedless/thesaurus/synonyms>