81 entries under rational topic. ×

2
systematic(adjective, logical, scrupulous, coherent)
2
trustworthy(adjective, good, sound, reasonable, sensible)
1
analytical(adjective, clear, sound, reasonable, sensible)
1
authentic(sound, reasonable, honest, solid)
1
commonsensical(clear, sound, reasonable, sensible)
1
congruent(clear, sound, reasonable, sensible)
1
consequent(clear, sound, reasonable, sensible)
1
deducible(clear, sound, reasonable, sensible)
1
determinative(sound, reasonable, definite, precise)
1
discriminating(clear, sound, reasonable, sensible)
1
extensional(clear, sound, reasonable, sensible)
1
germane(clear, sound, reasonable, sensible)
1
inferential(clear, sound, reasonable, sensible)
1
judicious(clear, sound, reasonable, sensible)
1
juridicious(clear, sound, reasonable, sensible)
1
kosher(clear, sound, reasonable, sensible)
1
legit(clear, sound, reasonable, sensible)
1
necessary(clear, sound, reasonable, sensible)
1
obvious(clear, sound, reasonable, sensible)
1
probable(sound, reasonable, sensible, solid, natural)
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APASmart Define. (2016). cogent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/cogent/thesaurus/synonyms
ChicagoSmart Define. 2016. "cogent thesaurus" https://smartdefine.org/cogent/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, cogent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/cogent/thesaurus/synonyms>.
MLASmart Define. "cogent thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/cogent/thesaurus/synonyms>