75 entries under approval topic. ×

20
confirmation(noun, check, information, mark, sign)
19
proof(noun, support, check, information, mark)
19
verification(noun, support, check, information, reason)
14
corroboration(noun, support, check, information, mark)
8
check(noun, examination, standard, trial)
7
affirmation(noun, information, mark, sign, display)
7
ratification(noun, evidence, proof, confirmation)
6
support(noun, statement, evidence, proof)
3
authorization(noun, proof, verification, endorsement)
3
endorsement(noun, evidence, proof, justification)
1
analysis(noun, check, examination, standard)
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)
1
dry run(noun, expression, check, examination)
1
elimination(noun, check, examination, standard)
1
essay(noun, check, examination, standard)
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APASmart Define. (2015). substantiation thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/substantiation/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiation thesaurus" https://smartdefine.org/substantiation/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, substantiation thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/substantiation/thesaurus/synonyms>.
MLASmart Define. "substantiation thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/substantiation/thesaurus/synonyms>