10
corroborative(adjective, evidence, side, positive, secondary)
8
confirmative(adjective, agreeable, willing, positive, supporting)
8
confirming(adjective, positive, supporting, assenting)
8
corroboratory
6
agreeing(positive, affirmative, assenting)
6
collateral(adjective, lower, subject, subordinate, secondary)
6
substantiating
6
substantiative
6
supporting(adjective, positive, secondary, indirect, ancillary)
6
validatory
5
affirmative(adjective, agreeable, willing, positive, agreeing)
5
validating
5
verificatory
4
acquiescent(adjective, agreeable, willing, positive, supporting)
4
supportive(adjective, collateral, subsidiary, subservient, subalternate)
4
verifying
3
authorizing
3
positive(adjective, supporting, assenting)
2
confirmed
2
dependent(adjective, side, collateral, secondary, indirect)
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APASmart Define. (2015). confirmatory thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/confirmatory/thesaurus/synonyms
ChicagoSmart Define. 2015. "confirmatory thesaurus" https://smartdefine.org/confirmatory/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, confirmatory thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/confirmatory/thesaurus/synonyms>.
MLASmart Define. "confirmatory thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/confirmatory/thesaurus/synonyms>