209 entries under noun topic. ×

6
demonstration(information, reason, display, true)
6
permission(support, sanction, authorization, commendation)
5
acceptance(approval, authorization, proof, confirmation)
5
admission(approval, proof, confirmation, verification)
5
agreement(support, approval, sanction, evidence)
5
assent(support, approval, sanction, evidence)
5
assurance
5
consent(support, approval, sanction, evidence)
4
avowal(proof, confirmation, verification, affirmation)
4
declaration(evidence, confirmation, verification, affirmation)
4
determination
4
seal
4
testament(information, reason, true, picture)
4
witness(information, reason, picture, evidence)
3
fact
3
go ahead(expression, approval, proof, confirmation)
3
green light(expression, support, approval, sanction)
3
imprimatur
3
justification(reason, explanation, reasoning, defense)
3
legalization(authorization, passing, ratification, enactment)
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APASmart Define. (2015). validation thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/validation/thesaurus/synonyms
ChicagoSmart Define. 2015. "validation thesaurus" https://smartdefine.org/validation/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, validation thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/validation/thesaurus/synonyms>.
MLASmart Define. "validation thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/validation/thesaurus/synonyms>