81 entries under verb topic. ×

11
confirming(adjective, checking, evincing, proving)
9
validating(adjective, checking, evincing, proving)
8
verifying(adjective, checking, proving, confirming)
6
demonstrating(evincing, confirming, ascertaining)
6
establishing(noun, evincing, confirming, ascertaining)
6
supporting
5
corroborating(adjective, checking, evincing, proving)
4
ascertaining
4
attesting
4
authenticating(checking, evincing, proving, confirming)
4
proving(checking, evincing, confirming, ascertaining)
3
certifying(evincing, ascertaining)
3
testifying
3
vindicating
3
vouching(noun, evincing)
2
affirming
2
checking(proving, ascertaining)
2
declaring
2
determining(evincing, ascertaining)
2
documenting
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APASmart Define. (2015). substantiating thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/substantiating/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiating thesaurus" https://smartdefine.org/substantiating/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, substantiating thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/substantiating/thesaurus/synonyms>.
MLASmart Define. "substantiating thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/substantiating/thesaurus/synonyms>