81 entries under approval topic. ×

25
confirmation(noun, check, information, reason, true)
21
substantiation(noun, support, check, information, reason)
16
proof(noun, support, study, check, measure)
15
corroboration(noun, support, check, information, reason)
14
validation(noun, information, reason, true)
12
attestation(noun, information, reason, true)
10
check(noun, study, measure, review)
8
trial(noun, study, check, measure)
8
ratification(noun, evidence, proof, confirmation)
6
inspection(noun, check, review, examination)
5
probation(noun, check, examination, standard)
5
warrant(noun, information, leave, reason, agreement)
4
criterion(noun, check, information, reason)
4
endorsement(noun, leave, agreement, permit)
3
admission(noun, agreement, authorization, consent)
3
experiment(noun, check, examination, test)
3
support(noun, statement, evidence, proof)
3
try(noun, study, check, measure)
2
analysis(noun, study, check, measure, review)
2
authorization(noun, agreement, consent, proof)
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APASmart Define. (2015). verification thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/verification/thesaurus/synonyms
ChicagoSmart Define. 2015. "verification thesaurus" https://smartdefine.org/verification/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, verification thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/verification/thesaurus/synonyms>.
MLASmart Define. "verification thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/verification/thesaurus/synonyms>