64 entries under rational topic. ×

5
far-sighted(adjective, sound, reasonable, smart, sensible)
5
informed(adjective, understanding, sound, reasonable, sharp)
4
cognizant(adjective, understanding, cool, reasonable, significant)
3
cool(adjective, sound, smooth, reasonable, smart)
3
levelheaded(adjective, sound, reasonable, reason, sensible)
3
logical(adjective, sound, reasonable, sensible)
2
attentive(adjective, understanding, reasonable, sensible, restrained)
2
balanced(adjective, sound, reasonable, reason, sensible)
2
conscious(adjective, understanding, cool, reasonable, keen)
2
normal(sound, reasonable, sensible, healthy)
1
all there(expression, adjective, sound, reasonable, sensible)
1
au courant(expression, adjective, understanding, reasonable, familiar)
1
consequent(adjective, reasonable, intelligent, sober)
1
conversant(adjective, understanding, cool, reasonable, significant)
1
deliberate(adjective, cool, sound, reasonable, sensible)
1
down-to-earth(adjective, reasonable, sober, wise)
1
fit(sensible, healthy, stable, sober)
1
in right mind(expression, adjective, idiom, understanding, reasonable)
1
lucid(sound, reasonable, sensible, healthy)
1
matter-of-fact(adjective, reasonable, sober, wise)
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APASmart Define. (2016). sagacious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sagacious/thesaurus/synonyms
ChicagoSmart Define. 2016. "sagacious thesaurus" https://smartdefine.org/sagacious/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sagacious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sagacious/thesaurus/synonyms>.
MLASmart Define. "sagacious thesaurus" 22 March 2016. Web. 24 September 2026. <https://smartdefine.org/sagacious/thesaurus/synonyms>