75 entries under approval topic. ×

21
confirmation(noun, check, information, mark, sign)
16
verification(noun, support, check, information, reason)
14
substantiation(noun, support, check, information, mark)
13
proof(noun, support, check, information, mark)
11
ratification(noun, confidence, assurance, evidence)
10
support(noun, statement, evidence, proof)
7
acceptance(noun, evidence, proof, recognition)
6
endorsement(noun, evidence, proof, justification)
4
avowal(noun, statement, evidence, proof)
3
admission(noun, evidence, proof, recognition)
3
check(noun, examination, standard, trial)
3
sanction(noun, evidence, proof, justification)
2
assent(noun, evidence, proof, recognition)
2
visa(noun, proof, assent, verification)
1
assessment(noun, check, examination, standard)
1
attempt(noun, check, examination, standard)
1
blue book(noun, expression, check, examination)
1
comp(noun, check, examination, standard)
1
countdown(noun, check, examination, standard)
1
criterion(noun, check, information, reason)
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APASmart Define. (2015). corroboration thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/corroboration/thesaurus/synonyms
ChicagoSmart Define. 2015. "corroboration thesaurus" https://smartdefine.org/corroboration/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, corroboration thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/corroboration/thesaurus/synonyms>.
MLASmart Define. "corroboration thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/corroboration/thesaurus/synonyms>