15 entries under careless topic. ×

3
neglectful(adjective, failing)
3
heedless(adjective, false, loose, reckless)
3
negligent(adjective, false, indifferent, loose)
3
remiss(adjective, thoughtless)
3
slipshod(adjective, refined)
2
improvident(adjective, spendthrift)
2
offhand(adjective, abrupt)
2
derelict(adjective, negligent)
2
irresponsible(adjective, reckless, responsible)
2
rash(adjective, reasonable, sensible, false)
2
tactless(adjective, unthinking, tactful)
1
impolitic(adjective, wise, unwise)
1
lackadaisical(adjective, indifferent)
1
unthinking(adjective, thoughtful)
0
wanton
10 years ago|5.8k views|share |citing 
APASmart Define. (2016). careful thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/careful/thesaurus/antonyms
ChicagoSmart Define. 2016. "careful thesaurus" https://smartdefine.org/careful/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, careful thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/careful/thesaurus/antonyms>.
MLASmart Define. "careful thesaurus" 24 January 2016. Web. 29 September 2026. <https://smartdefine.org/careful/thesaurus/antonyms>