12
prudent(adjective, action, careless, thought, wise)
6
cautious(adjective, careless, careful, reckless, guarded)
6
shy
5
careful(adjective, false, loose, reckless, painstaking)
4
chary(adjective, careless, careful, cautious)
4
discreet(adjective, sensible, careless, stupid, careful)
4
thoughtful(adjective, happy, careless, careful, superficial)
4
wary(adjective, careless, certain, careful, cautious)
3
circumspect(adjective, cautious, discreet)
3
heedful
3
jealous
3
safe(adjective, cautious, insecure, conservative, irresponsible)
2
alert
2
attentive
2
conservative(adjective, weak, moderate, unstable, cautious)
2
considerate(mean, hard, inconsiderate)
2
frugal(adjective, careless)
2
gingerly
2
guarded
2
judicious(adjective, careless, foolish, unsound)
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APASmart Define. (2015). incautious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/incautious/thesaurus/antonyms
ChicagoSmart Define. 2015. "incautious thesaurus" https://smartdefine.org/incautious/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, incautious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/incautious/thesaurus/antonyms>.
MLASmart Define. "incautious thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/incautious/thesaurus/antonyms>