61 entries under rational topic. ×

6
sophisticated(adjective, cool, significant, familiar, polite)
5
levelheaded(adjective, sound, reasonable, sensible)
5
psychological(adjective, thoughtful, knowledgeable, intellectual)
5
together(adjective, sensible, sober, sound)
5
well-advised(adjective, sound, reasonable, sensible)
4
advisable(adjective, sound, sensible, sober)
4
cogent(adjective, clear, sound, reasonable, sensible)
4
conscious(adjective, understanding, cool, sound, reasonable)
4
plausible(adjective, clear, sound, reasonable, sensible)
4
practical(adjective, sound, reasonable, sensible, familiar)
4
reflective(adjective, sound, reasonable, sharp, smart)
4
thoughtful(adjective, sound, reasonable, sharp, smart)
3
reasoned(adjective, sound, reasonable, sensible)
3
attentive(adjective, reasonable, sharp, bright, sensible)
3
sober(adjective, sound, reasonable, sensible)
3
witting(adjective, cool, reasonable, knowledge, experience)
2
contemplative(adjective, sound, sharp, sensible)
2
conversant(adjective, cool, reasonable, sympathetic, significant)
2
cool(adjective, sound, reasonable, sensible, significant)
2
far-sighted(adjective, sound, smooth, reasonable, sharp)
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APASmart Define. (2016). intelligent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/intelligent/thesaurus/synonyms
ChicagoSmart Define. 2016. "intelligent thesaurus" https://smartdefine.org/intelligent/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, intelligent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/intelligent/thesaurus/synonyms>.
MLASmart Define. "intelligent thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/intelligent/thesaurus/synonyms>