77 entries under expression topic. ×

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have a case(idiom, evidence)
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legally binding
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lend support(substantiate, corroborate)
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made certain(demonstrate, validate)
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make certain(verb, check, confirm, prove)
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pull for(substantiate, corroborate)
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put John Hancock on(verb, idiom, sign)
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put signature on(verb, idiom, sign)
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say under oath(verb, idiom, sign, endorse)
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shake hands on(idiom, settle, guarantee)
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sign on dotted line(verb, idiom, sign)
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stand by(substantiate, corroborate)
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stand for(verb, sign, endorse, countersign)
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testify authenticate(sign, endorse, countersign)
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try on(verify, validate)
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try out(verify, validate)
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wrap up(settle, guarantee)
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APASmart Define. (2015). authenticate thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/authenticate/thesaurus/synonyms
ChicagoSmart Define. 2015. "authenticate thesaurus" https://smartdefine.org/authenticate/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, authenticate thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/authenticate/thesaurus/synonyms>.
MLASmart Define. "authenticate thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/authenticate/thesaurus/synonyms>