5
headlong(adjective, passionate, violent, wild, thoughtless)
5
inadvisable(adjective, inappropriate, unwise, recommended)
5
oscitant(noun, adjective, cold, forget, uncaring)
5
phlegmatic(adjective, dull, indifferent, sluggish, indifference)
5
pococurante(adjective, casual, indifference, happy-go-lucky, slapdash)
5
random(adjective, motiveless)
5
shabby(adjective, slovenly)
5
superficial(adjective, casual, quick, impulsive, reckless)
5
undiscriminating(adjective, casual, unfussy, cursory, undiscerning)
5
unkempt(adjective, slovenly)
5
unmotivated
5
unorganized(adjective, casual, arbitrary)
5
unworried(adjective, feature, state, indifferent, trait)
5
wrong(adjective, false, improper, inappropriate, criminal)
4
absentminded(adjective, indifferent, apathetic, unconcerned, ignorant)
4
aimless(adjective, weak, casual, feeble, arbitrary)
4
airy(adjective, feature, state, calm, cool)
4
daring(adjective, wild, anxious, worried, thoughtless)
4
dilatory(adjective, dull, idle, sluggish, inactive)
4
dirty(adjective, slovenly)
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APASmart Define. (2016). careless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/careless/thesaurus/synonyms
ChicagoSmart Define. 2016. "careless thesaurus" https://smartdefine.org/careless/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, careless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/careless/thesaurus/synonyms>.
MLASmart Define. "careless thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/careless/thesaurus/synonyms>