2
supporting(noun, approval, encouragement, proof, confirmation)
2
validating(noun, approval, proof, confirmation, verification)
2
warranty(noun, affirmation)
1
absolution(noun, reason, approval, argument, explanation)
1
accepting(noun, approval, proof, confirmation, verification)
1
account(noun, reason, approval, argument, explanation)
1
acquittal(noun, reason, approval, argument, explanation)
1
administration
1
advocacy(noun, reason, approval, argument, explanation)
1
affidavit(noun, information, reason, picture, evidence)
1
affirming(noun, approval, proof, confirmation, verification)
1
answer(noun, reason, approval, argument, explanation)
1
apologia(noun, reason, approval, argument, explanation)
1
apology(noun, reason, approval, argument, explanation)
1
argument(noun, information, reason, approval, picture)
1
authenticating(noun, approval, proof, confirmation, verification)
1
authorisation
1
authority
1
authorizing(noun, approval, proof, confirmation, verification)
1
averment(noun, information, reason, picture, evidence)
11 years ago|6.6k views|share |citing 
APASmart Define. (2015). validation thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/validation/thesaurus/synonyms
ChicagoSmart Define. 2015. "validation thesaurus" https://smartdefine.org/validation/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, validation thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/validation/thesaurus/synonyms>.
MLASmart Define. "validation thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/validation/thesaurus/synonyms>