14 entries under careless topic. ×

22
prudent(adjective, reserved, cautious, imprudent)
17
wary(adjective, certain, careful, reserved)
15
cautious(adjective, reserved)
4
discreet(adjective, sensible, stupid, reserved)
4
judicious(adjective, foolish, thoughtful, wise)
1
levelheaded
1
wise(adjective, foolish, reserved, cautious)
0
buttoned up(expression, clear)
0
canny(open, honest)
0
clammed up(expression, clear)
0
cool as cucumber(expression, idiom, unsound)
0
coolheaded
0
hep
-1
with all marbles(expression, idiom, unsound)
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APASmart Define. (2015). reckless thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/reckless/thesaurus/antonyms
ChicagoSmart Define. 2015. "reckless thesaurus" https://smartdefine.org/reckless/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, reckless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/reckless/thesaurus/antonyms>.
MLASmart Define. "reckless thesaurus" 3 August 2015. Web. 23 September 2026. <https://smartdefine.org/reckless/thesaurus/antonyms>