Synonyms|346Antonyms|12|Broader|4Narrower|4Related|35

53 entries under rational topic. ×

0
defensible(sound, reasonable)
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efficacious(sound, reasonable)
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efficient(sound, reasonable)
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genuine(sound, reasonable)
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good(sound, reasonable)
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in force(expression, sound, reasonable)
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just(sound, reasonable)
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justifiable(sound, reasonable)
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kosher(sound, reasonable)
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lawful(sound, reasonable)
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legal(sound, reasonable)
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legit(sound, reasonable)
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legitimate(sound, reasonable)
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logical(sound, reasonable)
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official(sound, reasonable)
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original(sound, reasonable)
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potent(sound, reasonable)
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powerful(sound, reasonable)
0
proven(sound, reasonable)
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pure(sound, reasonable)
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ChicagoSmart Define. 2015. "determinative thesaurus" https://smartdefine.org/determinative/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, determinative thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/determinative/thesaurus/synonyms>.
MLASmart Define. "determinative thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/determinative/thesaurus/synonyms>