5
assuredly
5
copy(noun, verb, plan, example, sample)
5
definitely
5
for sure
5
ground(noun, cause, reason, idea, case)
5
grounds(noun, information, mark, cause, sign)
5
symptom(noun, feature, characteristic, appearance, information)
5
testimonial(noun, information, mark, sign, true)
5
trial impression(noun, expression, idiom)
5
warrant(noun, support, action, mark, cause)
5
wherefore(noun, cause, reason, idea, case)
4
appearance(noun, display, manifestation, index)
4
clue(noun, support, information, mark, light)
4
contract(noun, agreement, deal)
4
crucial test(expression, idiom, experiment)
4
determination(noun, evidence, experiment)
4
disclosure(noun, appearance, display, manifestation, index)
4
embodiment(noun, copy, confirmation, example, sample)
4
expression(noun, mark, display, sign, appearance)
4
goods(noun, information, mark, cause, knowledge)
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APASmart Define. (2015). proof thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/proof/thesaurus/synonyms
ChicagoSmart Define. 2015. "proof thesaurus" https://smartdefine.org/proof/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, proof thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/proof/thesaurus/synonyms>.
MLASmart Define. "proof thesaurus" 22 December 2015. Web. 22 September 2026. <https://smartdefine.org/proof/thesaurus/synonyms>