61 entries under rational topic. ×

16
knowing(adjective, smart, keen, sharp, wise)
14
inventive(adjective, smart, characteristic, smartness, bright)
13
informed(adjective, sound, reasonable, knowledge, sharp)
13
percipient(adjective, cool, sound, sharp, sensible)
12
reasoning(adjective, sound, reasonable, sensible)
11
aware(adjective, understanding, cool, sound, reasonable)
11
sane(adjective, sound, reasonable, sensible)
11
sapient(adjective, sound, knowledge, sharp, smart)
10
discreet(adjective, reasonable, smart, sensible, skill)
9
cerebral(adjective, intellectual, sensible, practical)
9
discriminating(adjective, clear, sound, reasonable, keen)
9
learned(adjective, sound, knowledge, keen, sharp)
8
deep(adjective, smart, characteristic, sharp, bright)
7
cognizant(adjective, cool, sound, reasonable, sensible)
7
creative(adjective, smart, characteristic, bright)
7
healthy(adjective, sound, sensible, stable)
6
commonsensical(adjective, clear, sound, reasonable, sensible)
6
consequent(adjective, clear, sound, reasonable, reason)
6
highbrow(adjective, smart, intellectual, characteristic, bright)
6
level-headed(adjective, sound, reasonable, sensible)
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APASmart Define. (2016). intelligent thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/intelligent/thesaurus/synonyms
ChicagoSmart Define. 2016. "intelligent thesaurus" https://smartdefine.org/intelligent/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, intelligent thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/intelligent/thesaurus/synonyms>.
MLASmart Define. "intelligent thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/intelligent/thesaurus/synonyms>