Synonyms|832Antonyms|240|Broader|11Narrower|0Related|915

52 entries under rational topic. ×

1
true(sound, reasonable)
1
trustworthy(good, sound, right, reasonable)
0
attested(good, sound, right, reasonable)
0
authentic(good, sound, right, reasonable)
0
binding(sound, reasonable)
0
bona fide(expression, good, sound, right, reasonable)
0
conclusive(sound, reasonable, influential, winning)
0
confirmed(good, sound, right, reasonable)
0
credible(good, sound, right, reasonable)
0
defensible(sound, reasonable)
0
determinative(sound, reasonable)
0
genuine(good, sound, right, reasonable)
0
in force(expression, good, sound, right, reasonable)
0
irrefutable(sound, reasonable)
0
just(good, sound, right, reasonable)
0
justifiable(sound, reasonable)
0
lawful(good, sound, right, reasonable)
0
legal(good, sound, right, reasonable)
0
legitimate(good, sound, right, reasonable)
0
original(good, sound, right, reasonable)
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ChicagoSmart Define. 2015. "efficient thesaurus" https://smartdefine.org/efficient/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, efficient thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficient/thesaurus/synonyms>.
MLASmart Define. "efficient thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/efficient/thesaurus/synonyms>