606 entries under noun topic. ×

48
evidence(verb, expression, feature, support)
25
trial(expression, action, study, understanding)
20
substantiation(support, check, information, mark)
18
fact(measure, test, truth, standard)
18
demonstration(appearance, information, mark, cause)
17
conviction(confidence, assurance, certainty, undoubtedness)
15
test(study, check, cause, reason)
15
testimony(information, mark, cause, knowledge)
14
certainty(confidence, assurance, truth, undoubtedness)
14
conclusion
14
confirmation(check, information, mark, sign)
14
veracity
14
verification(support, study, check, measure)
14
reasoning(reason, case, claim, analysis)
14
truth
14
validation(display, true, approval, evidence)
13
attestation(information, mark, sign, true)
13
axiom(support, action, base, beginning)
13
consequence
13
knowledge(action, understanding, information, experience)
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APASmart Define. (2015). proof thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/proof/thesaurus/synonyms
ChicagoSmart Define. 2015. "proof thesaurus" https://smartdefine.org/proof/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, proof thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/proof/thesaurus/synonyms>.
MLASmart Define. "proof thesaurus" 22 December 2015. Web. 23 September 2026. <https://smartdefine.org/proof/thesaurus/synonyms>