3
composed(adjective, calm, quiet, sound, reasonable)
3
conceptual(adjective, cerebral, psychological)
3
controlled(adjective, reasonable, moderate, honest, sensible)
3
convincing(adjective, clear, sound, reasonable, sensible)
3
deductive(adjective, adverb, sound, reasonable, sensible)
3
dispassionate(adjective, calm, sound, reasonable, sensible)
3
equitable(adjective, sound, reasonable, moderate, honest)
3
erudite(adjective, sensible, intelligent, wise, moral)
3
even(adjective, reasonable, sensible, restrained, ordinary)
3
finite
3
hard-boiled(adjective, calm, hard, sound, tough)
3
hard-headed(adjective, sound, reasonable)
3
impossible
3
infinite
3
insightful(adjective, understanding, smooth, keen, sharp)
3
metaphysical(moral, intellect, logical, theoretical)
3
methodical(adjective, logical, coherent, systematic, investigative)
3
negative
3
numerical(adjective, calculational)
3
philosophic(adjective, sound, reasonable, keen, sensible)
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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>