Synonyms|299Antonyms|52|Broader|6Narrower|3Related|181
2
signature(proof, confirmation, substantiation)
2
signet(hint, indication, seal, stamp, giveaway)
2
trademark(noun, hint, indication, seal, stamp)
2
visa(approval, proof, verification, endorsement, validation)
2
voucher(noun, permit, security, warrant, document)
2
witness(noun, information, reason, approval, picture)
1
affidavit(noun, information, reason, permit, record)
1
argument(noun, information, reason, picture, evidence)
1
assertion
1
assurance(seal, stamp, trademark)
1
authenticate
1
authenticity
1
authorisation
1
authority(noun, validation)
1
authorizing document(expression, permit, warrant, document, license)
1
averment(noun, information, reason, picture, evidence)
1
backing
1
case(noun, information, reason, picture, evidence)
1
clincher(noun, information, reason, picture, evidence)
1
clue(noun, information, reason, hint, indication)
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APASmart Define. (2015). authentication thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/authentication/thesaurus/synonyms
ChicagoSmart Define. 2015. "authentication thesaurus" https://smartdefine.org/authentication/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, authentication thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/authentication/thesaurus/synonyms>.
MLASmart Define. "authentication thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/authentication/thesaurus/synonyms>