6
shoddy(adjective, neglectful)
6
weak(adjective, feature, state, trait)
5
abstracted(noun, adjective, careless, casual, thoughtless)
5
brash(adjective, sharp, rude, careless, indifferent)
5
detached(noun, adjective, calm, cool, relaxed)
5
foolhardy(adjective, careless, wild, thoughtless, easygoing)
5
improvident(adjective, careless, casual, bold, thoughtless)
5
incautious(adjective, sharp, rude, careless, indifferent)
5
lackadaisical(adjective, calm, quiet, cool, easy)
5
mindless(adjective, indifferent, wild, stupid, casual)
5
slow(adjective, careless, sluggish, late, lazy)
5
unconscious(adjective, careless, indifferent, apathetic, thoughtless)
5
unmotivated
5
unsolicitous(adjective, cold, forget, uncaring, inattentive)
5
unthoughtful(adjective, sharp, rude, cold, indifferent)
5
wild(adjective, careless, thoughtless, reckless, irresponsible)
4
blase(adjective, calm, cool, relaxed, cold)
4
cursory(adjective, careless, indifferent, casual, sloppy)
4
daring(adjective, wild, thoughtless, reckless, deed)
4
easy(adjective, feature, state, calm, quiet)
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APASmart Define. (2015). negligent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/negligent/thesaurus/synonyms
ChicagoSmart Define. 2015. "negligent thesaurus" https://smartdefine.org/negligent/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, negligent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/negligent/thesaurus/synonyms>.
MLASmart Define. "negligent thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/negligent/thesaurus/synonyms>