66 entries under sound topic. ×

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for sure(expression, certain, true, definite)
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genuine(reasonable, rational)
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in force(expression, reasonable, rational)
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justifiable(reasonable, rational)
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kosher(reasonable, rational)
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legit(reasonable, rational)
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manifest(certain, true, definite, unquestionable)
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no ifs and or buts(expression, certain, true, definite)
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open and shut(expression, certain, true, definite)
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original(reasonable, rational)
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patent(certain, true, definite, unquestionable)
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persuasive(reasonable, rational)
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potent(reasonable, rational)
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proven(reasonable, certain, rational, definite)
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pure(reasonable, rational)
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rational
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reasonable
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right(reasonable, rational)
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strong(reasonable, rational)
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sure thing(expression, certain, true, definite)
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APASmart Define. (2015). binding thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/binding/thesaurus/synonyms
ChicagoSmart Define. 2015. "binding thesaurus" https://smartdefine.org/binding/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, binding thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/binding/thesaurus/synonyms>.
MLASmart Define. "binding thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/binding/thesaurus/synonyms>