146 entries under rational topic. ×

5
enlightened(adjective, sound, reasonable, sharp)
5
logical(adjective, clear, sound, reasonable, sensible)
5
perspicuous(adjective, clear, sound, reasonable, sensible)
5
ruminative(adjective, reasonable, intelligent, thoughtful)
5
sane(adjective, sound, reasonable, sensible)
4
attentive(adjective, understanding, reasonable, keen, sensible)
4
far-sighted(adjective, sound, reasonable, sensible)
4
informed(adjective, understanding, sound, reasonable, keen)
3
alive(adjective, cool, smart, bright, alert)
3
analytical(adjective, clear, sound, reasonable, sharp)
3
calculating(adjective, smooth, reasonable, keen, sharp)
3
cognizant(adjective, understanding, cool, reasonable, keen)
3
conscious(adjective, understanding, cool, reasonable, keen)
3
sober(adjective, sound, reasonable, sensible)
3
sophisticated(adjective, cool, reasonable, sensible, delicate)
2
all there(expression, adjective, sound, reasonable, keen)
2
cogent(clear, sound, reasonable, sensible)
2
conversant(adjective, understanding, cool, reasonable, keen)
2
intellectual(adjective, sound, reasonable, smart, bright)
2
normal(sound, reasonable, sensible, healthy)
11 years ago|19k views|share |citing 
APASmart Define. (2015). discerning thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/discerning/thesaurus/synonyms
ChicagoSmart Define. 2015. "discerning thesaurus" https://smartdefine.org/discerning/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, discerning thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/discerning/thesaurus/synonyms>.
MLASmart Define. "discerning thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/discerning/thesaurus/synonyms>