116 entries under rational topic. ×

2
obvious(clear, sound, reasonable, sensible)
2
proven(sound, reasonable)
2
straightforward(adjective, good, open, sound, reasonable)
2
unadulterated(good, sound, right, reasonable, true)
2
uncolored(adjective, good, reasonable, clean, honest)
2
weighty(good, sound, right, reasonable)
1
analytic(clear, sound, reasonable, sensible)
1
analytical(adjective, clear, sound, reasonable, honest)
1
attested(adjective, good, sound, right, reasonable)
1
blameless(adjective, good, clear, reasonable, clean)
1
commonsensical(clear, sound, reasonable, sensible)
1
conclusive(adjective, sound, reasonable)
1
congruent(clear, sound, reasonable, sensible)
1
consequent(clear, sound, reasonable, sensible)
1
decent(adjective, good, sound, correct, right)
1
deducible(clear, sound, reasonable, sensible)
1
discerning(clear, sound, reasonable, sensible)
1
discriminating(clear, sound, reasonable, sensible)
1
extensional(clear, sound, reasonable, sensible)
1
frank(adjective, good, open, reasonable, clean)
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APASmart Define. (2016). legitimate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/legitimate/thesaurus/synonyms
ChicagoSmart Define. 2016. "legitimate thesaurus" https://smartdefine.org/legitimate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, legitimate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/legitimate/thesaurus/synonyms>.
MLASmart Define. "legitimate thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/legitimate/thesaurus/synonyms>