125 entries under noun topic. ×

17
confirmation(information, reason, true, approval)
17
verification(information, reason, find, true)
16
certification(information, reason, find, permit)
14
corroboration(information, reason, true, picture)
13
validation(information, reason, true, approval)
12
substantiation(information, reason, true, picture)
11
attestation(information, reason, true, permit)
10
affirmation(permit, approval, authorization, proof)
10
testimony(information, reason, true, permit)
9
evidence(information, reason, true, approval)
9
proof(true, approval, evidence, witness)
8
hallmark(seal, stamp, trademark)
8
ratification(hint, approval, indication, evidence)
8
warrant(information, reason, true, permit)
7
documentation(permit, evidence, warrant, document)
7
endorsement(permit, hint, record, approval)
6
approval(approval, authorization, proof, confirmation)
5
assay-mark
5
authorization(permit, approval, authorization, proof)
5
sanction(approval, authorization, proof, verification)
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APASmart Define. (2015). authentication thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/authentication/thesaurus/synonyms
ChicagoSmart Define. 2015. "authentication thesaurus" https://smartdefine.org/authentication/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, authentication thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/authentication/thesaurus/synonyms>.
MLASmart Define. "authentication thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/authentication/thesaurus/synonyms>