48 entries under rational topic. ×

1
legitimate(adjective, sound, reasonable)
1
potent(sound, reasonable, forceful, winning)
1
powerful(sound, reasonable, solid, realistic)
1
trustworthy(clear, sound, reasonable, solid)
1
well-founded(adjective, strong, sound, reasonable, easy)
1
well-grounded(sound, reasonable, absolute, forceful)
0
attested(sound, reasonable)
0
bona fide(expression, sound, reasonable, absolute)
0
confirmed(sound, reasonable)
0
defensible(sound, reasonable)
0
efficacious(sound, reasonable, influential, winning)
0
efficient(sound, reasonable, influential, winning)
0
good(sound, reasonable)
0
in force(expression, sound, reasonable)
0
just(sound, reasonable)
0
justifiable(sound, reasonable)
0
kosher(sound, reasonable)
0
lawful(sound, reasonable)
0
legal(sound, reasonable)
0
legit(sound, reasonable)
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APASmart Define. (2016). conclusive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/conclusive/thesaurus/synonyms
ChicagoSmart Define. 2016. "conclusive thesaurus" https://smartdefine.org/conclusive/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, conclusive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/conclusive/thesaurus/synonyms>.
MLASmart Define. "conclusive thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/conclusive/thesaurus/synonyms>