1
accredit
1
accreditation(noun, permit, authorization, identification)
1
accusation
1
affirm
1
affirming(proof, verification, endorsement, authentication, substantiation)
1
agreement(noun, approval, contract, assurance, evidence)
1
asservation(statement, declaration, contention, affirmation, proclamation)
1
authenticating(proof, verification, endorsement, authentication, substantiation)
1
authentication stamp(expression, impression, impress, stamp)
1
authorisation
1
authority
1
authorizing(proof, verification, endorsement, authentication, substantiation)
1
authorizing document(expression, permit, warrant, document, license)
1
autograph
1
averral
1
backing
1
backing up
1
bargain(noun, agreement, contract, assurance, promise)
1
bearing out
1
bill of health(expression, idiom)
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APASmart Define. (2015). attestation thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/attestation/thesaurus/synonyms
ChicagoSmart Define. 2015. "attestation thesaurus" https://smartdefine.org/attestation/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, attestation thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/attestation/thesaurus/synonyms>.
MLASmart Define. "attestation thesaurus" 29 September 2015. Web. 23 September 2026. <https://smartdefine.org/attestation/thesaurus/synonyms>