3
mannerly(adjective, refined)
3
mindful(adjective, quiet, reasonable, careless, prudent)
3
observant(adjective, reasonable, careless, alert, prudent)
3
polite(adjective, mean, rough, rude, refined)
2
bemused
2
brooding
2
broody
2
chary
2
courteous(mean, rude)
2
discreet(adjective, sensible, careless, stupid, cautious)
2
canny(adjective, open, honest, careless)
2
caring
2
genteel
2
gracious
2
grateful
2
judicious(adjective, careless, foolish, thoughtful, wise)
2
kind hearted
2
lost
2
meditative
2
musing
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APASmart Define. (2016). thoughtless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/thoughtless/thesaurus/antonyms
ChicagoSmart Define. 2016. "thoughtless thesaurus" https://smartdefine.org/thoughtless/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, thoughtless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/thoughtless/thesaurus/antonyms>.
MLASmart Define. "thoughtless thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/thoughtless/thesaurus/antonyms>