13
realist
12
commonsensical(adjective, calm, good, clear, sound)
12
cool(adjective, calm, good, sound, reasonable)
12
reasoning(noun, adjective, sound, reasonable, sensible)
12
balanced(adjective, calm, sound, reasonable, reason)
12
clever(adjective, smart, bright, sensible, alert)
12
level-headed(adjective, calm, sound, tough, reasonable)
11
sage(adjective, understanding, sound, reasonable, keen)
11
well-balanced(adjective, sensible, equal, stable, normal)
10
plausible(adjective, clear, sound, reasonable, sensible)
10
ratiocinative(adjective, clear, sound, reasonable, reason)
10
calm(adjective, sound, reasonable, sensible, restrained)
10
collected(adjective, calm, quiet, sound, reasonable)
10
compos mentis(expression, adjective, idiom, sound, reasonable)
10
discreet(adjective, calm, understanding, reasonable, keen)
10
of sound mind(expression, adjective, idiom, sensible, healthy)
10
together(adjective, calm, good, sound, reasonable)
9
cerebral(adjective, sound, reasonable, sensible, intelligent)
9
circumspect(adjective, sound, reasonable, moderate, proper)
9
down-to-earth(adjective, calm, hard, sound, reasonable)
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APASmart Define. (2016). rational thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/rational/thesaurus/synonyms
ChicagoSmart Define. 2016. "rational thesaurus" https://smartdefine.org/rational/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, rational thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/rational/thesaurus/synonyms>.
MLASmart Define. "rational thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/rational/thesaurus/synonyms>