80 entries under proof topic. ×

16
affirmation(noun, communication, information, mark, sign)
16
testimony(noun, communication, information, mark, sign)
15
declaration(noun, information, mark, knowledge, sign)
14
confirmation(noun, information, mark, sign, reason)
13
corroboration(noun, information, mark, sign, reason)
13
evidence(noun, information, mark, sign, reason)
13
validation(noun, information, reason, true, picture)
13
verification(noun, information, reason, true, approval)
12
authentication(noun, information, reason, true, permit)
11
substantiation(noun, information, mark, sign, reason)
9
certification(noun, information, reason, agreement, permit)
9
deposition(noun, communication, information, mark, sign)
9
testament(noun, information, mark, sign, reason)
9
testimonial(noun, information, mark, sign, true)
7
documentation(noun, information, mark, sign, permit)
7
seal(noun, impression, indication, impress)
7
support(noun, statement, evidence, declaration)
7
witness(noun, information, mark, sign, reason)
6
admission(noun, declaration, profession, acknowledgment)
6
affidavit(noun, information, reason, speech, permit)
11 years ago|5.3k views|share |citing 
APASmart Define. (2015). attestation thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/attestation/thesaurus/synonyms
ChicagoSmart Define. 2015. "attestation thesaurus" https://smartdefine.org/attestation/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, attestation thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/attestation/thesaurus/synonyms>.
MLASmart Define. "attestation thesaurus" 29 September 2015. Web. 22 September 2026. <https://smartdefine.org/attestation/thesaurus/synonyms>