5
discerning(adjective, stupid, ignorant)
3
discreet(adjective, sensible, careless, stupid, cautious)
3
ruminative
2
discriminating(adjective, critical)
2
sharp(adjective, open)
1
acute
1
astute
1
clear
1
clear-eyed
1
clear-sighted
1
conscious(adjective, sensitive)
1
judicious
1
observant(adjective, interested)
1
penetrating
1
penetrative(careless, clumsy, unperceptive)
1
perceptive(adjective, careless, insensitive)
1
percipient
1
perspicacious
1
prescient
1
rational(adjective, reasonable, sensible)
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APASmart Define. (2015). undiscerning thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/undiscerning/thesaurus/antonyms
ChicagoSmart Define. 2015. "undiscerning thesaurus" https://smartdefine.org/undiscerning/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, undiscerning thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/undiscerning/thesaurus/antonyms>.
MLASmart Define. "undiscerning thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/undiscerning/thesaurus/antonyms>