70 entries under rational topic. ×

26
discerning(verb, adjective, clear, sound, reasonable)
12
shrewd(adjective, smooth, reasonable, sharp, smart)
11
judicious(adjective, clear, sound, correct, reasonable)
10
discreet(adjective, reasonable, sensible, careful)
10
prudent(adjective, sound, smooth, reasonable, keen)
10
wise(adjective, clear, sound, reasonable, keen)
9
intelligent(adjective, clear, sound, reasonable, keen)
8
perspicacious(adjective, sound, reasonable, keen, sharp)
8
sagacious(adjective, sound, reasonable, keen, sharp)
6
astute(adjective, reasonable, keen, sharp, smart)
4
canny(adjective, reasonable, keen, sharp, smart)
4
judicial(adjective, reasonable, sensible, careful)
4
reasonable(adjective, sound, sensible, restrained)
4
sage(adjective, smooth, reasonable, sharp, sensible)
3
aware(adjective, reasonable, sensible, stable)
3
logical(adjective, clear, sound, reasonable, sensible)
3
sound(adjective, clear, reasonable, sensible, fair)
2
informed(adjective, reasonable, sensible, stable)
2
sane(adjective, sound, reasonable, sensible)
1
all there(expression, adjective, sound, reasonable, sensible)
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APASmart Define. (2015). discriminating thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/discriminating/thesaurus/synonyms
ChicagoSmart Define. 2015. "discriminating thesaurus" https://smartdefine.org/discriminating/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, discriminating thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/discriminating/thesaurus/synonyms>.
MLASmart Define. "discriminating thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/discriminating/thesaurus/synonyms>