4
sanction(noun, permit, authorization, proof, verification)
4
voucher(noun, permit, record, sanction, statement)
4
warranty(noun, agreement, permit, record, contract)
3
allegation(statement, declaration, contention, affirmation, proclamation)
3
averment(noun, communication, information, mark, sign)
3
guarantee(noun, agreement, permit, record, assurance)
3
information(noun, mark, sign, reason, speech)
3
manifestation(noun, information, mark, sign, hint)
3
oath(noun, communication, agreement, speech, answer)
3
pledge(noun, sign, agreement, hint, suggestion)
3
promise(noun, agreement, contract, assurance, pledge)
3
sworn statement(noun, expression, confirmation, assertion, oath)
3
word(noun, agreement, contract, assurance, promise)
2
authorization(noun, permit, impression, proof, warrant)
2
avouchment(confirmation, assertion, pronouncement)
2
clincher(noun, information, mark, sign, reason)
2
counter-evidence(noun, evidence)
2
credential(noun, permit, record, statement, warrant)
2
determination(noun, evidence)
2
diploma(noun, permit, authorization, warrant, document)
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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>