60 entries under sound topic. ×

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defensible(reasonable, rational)
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determinative(reasonable, rational)
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efficacious(good, right, reasonable, rational)
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efficient(good, right, reasonable, rational)
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in force(expression, good, right, reasonable)
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logical(good, right, reasonable, rational)
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persuasive(good, right, reasonable, rational)
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potent(good, right, reasonable, rational)
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powerful(good, right, reasonable, rational)
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proven(reasonable, rational)
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rational
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reasonable
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stringent(good, right, reasonable, rational)
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strong(good, right, reasonable, rational)
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telling(reasonable, rational)
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tested(good, right, reasonable, rational)
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ultimate(reasonable, rational)
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unanswerable(good, right, reasonable, rational)
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uncorrupted(good, right, reasonable, rational)
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weighty(good, right, reasonable, rational)
<123>
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APASmart Define. (2016). bona fide thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/bona_fide/thesaurus/synonyms
ChicagoSmart Define. 2016. "bona fide thesaurus" https://smartdefine.org/bona_fide/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, bona fide thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/bona_fide/thesaurus/synonyms>.
MLASmart Define. "bona fide thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/bona_fide/thesaurus/synonyms>