20
confirmation(noun, support, information, reason, display)
15
substantiation(noun, information, reason, display, true)
14
verification(noun, information, reason, true, approval)
14
proof(noun, display, true, approval, evidence)
13
approval(noun, support, reason, argument, sanction)
12
corroboration(noun, information, reason, true, picture)
12
attestation(noun, information, reason, true, picture)
12
authentication(noun, information, reason, true, approval)
12
certification(noun, information, reason, picture, evidence)
11
affirmation(noun, display, authorization, proof, commendation)
11
sanction(noun, support, approval, evidence, authorization)
10
authorization(noun, support, approval, sanction, evidence)
10
endorsement(noun, support, approval, sanction, evidence)
10
establishment(noun, information, reason, picture, evidence)
10
evidence(noun, information, reason, display, true)
9
ratification(noun, support, approval, sanction, evidence)
9
support(noun, reason, approval, argument, sanction)
8
documentation(noun, evidence, confirmation, verification)
7
testimony(noun, information, reason, display, true)
7
warrant(noun, information, reason, true, approval)
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APASmart Define. (2015). validation thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/validation/thesaurus/synonyms
ChicagoSmart Define. 2015. "validation thesaurus" https://smartdefine.org/validation/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, validation thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/validation/thesaurus/synonyms>.
MLASmart Define. "validation thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/validation/thesaurus/synonyms>