Synonyms|263Antonyms|79|Broader|1Narrower|0Related|671

50 entries under rational topic. ×

1
kosher(sound, reasonable, proper, accepted)
1
legit(sound, reasonable, proper, reliable)
1
unanswerable(set, sound, reasonable, certain)
0
binding(sound, reasonable, certain, definite)
0
bona fide(expression, sound, reasonable)
0
cogent(sound, reasonable)
0
compelling(sound, reasonable)
0
convincing(sound, reasonable, certain, reliable)
0
credible(sound, reasonable)
0
defensible(sound, reasonable)
0
determinative(sound, reasonable)
0
efficacious(sound, reasonable)
0
in force(expression, sound, reasonable)
0
just(adjective, good, sound, right, reasonable)
0
lawful(sound, reasonable)
0
logical(sound, reasonable, understandable)
0
official(sound, reasonable, accepted, permitted)
0
original(sound, reasonable)
0
persuasive(sound, reasonable)
0
potent(sound, reasonable)
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ChicagoSmart Define. 2015. "proven thesaurus" https://smartdefine.org/proven/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, proven thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/proven/thesaurus/synonyms>.
MLASmart Define. "proven thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/proven/thesaurus/synonyms>