2
reinforcement
2
sheepskin(permit, warrant, document, license, diploma)
2
sign(noun, information, mark, hint, suggestion)
2
signature(indication, proof, confirmation, substantiation)
2
smoking gun(noun, expression, information, mark, sign)
2
stamp of approval(expression, idiom, statement, proof, contention)
2
statement under oath(expression, idiom)
2
straight stuff(noun, expression, information, reason, picture)
2
strengthening
2
submission(noun, statement, evidence, declaration, affirmation)
2
swearing
2
sworn evidence
2
sworn testimony
2
ticket(permit, warrant, document, license, diploma)
2
visa(proof, verification, endorsement, authentication, substantiation)
1
ID
1
acceptance(proof, verification, endorsement, authentication, substantiation)
1
accepting(proof, verification, endorsement, authentication, substantiation)
1
accession(declaration, profession, confession)
1
accord(proof, verification, endorsement, authentication, substantiation)
11 years ago|5.3k views|share |citing 
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>