10
heedless(adjective, careless, careful)
10
careless(adjective, responsible)
10
forgetful(adjective, remember, mindful)
9
half ass
7
neglectful(adjective, careless, careful, failing)
6
inattentive(adjective, attention, concerned, negligent)
6
ignorant(adjective, careless)
6
inconsiderate
6
oblivious
6
thoughtless(adjective, reasonable, prudent, unobservant)
5
lax
5
distracted
5
negligent(adjective, careless, indifferent, careful)
5
sarcastic
5
work-shy
4
absent
4
absent-minded(adjective, out)
4
crazy
4
listless(adjective, energy, energetic, lively, spiritless)
4
mindless(adjective, reasonable)
<1234510>
10 years ago|3.5k views|share |citing 
APASmart Define. (2016). attentive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/attentive/thesaurus/antonyms
ChicagoSmart Define. 2016. "attentive thesaurus" https://smartdefine.org/attentive/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, attentive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/attentive/thesaurus/antonyms>.
MLASmart Define. "attentive thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/attentive/thesaurus/antonyms>