11
provable(adjective, clear, hard, sound, plain)
9
verifiable(adjective, clear, hard, sound, plain)
8
incontrovertible(adjective, evident, provable)
8
obvious(adjective, evident, provable)
7
certain(adjective, clear, true, real, valid)
6
conclusive(adjective, demonstration, evident, provable)
6
confirmable(adjective, clear, hard, sound, plain)
6
irrefutable(adjective, demonstration, evident, provable)
6
undeniable(adjective, evident, provable)
6
unquestionable(adjective, true, real, indisputable)
5
apparent
5
evident
5
incontestable(adjective, certain)
5
indubitable(adjective, clear, honest, pure, true)
5
positive(adjective, clear, true, real, valid)
5
supportable(adjective, true, real)
4
actual(true, real, indisputable)
4
apodictic
4
attestable(adjective, evident, provable)
4
axiomatic(adjective, evident, provable)
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APASmart Define. (2015). demonstrable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/demonstrable/thesaurus/synonyms
ChicagoSmart Define. 2015. "demonstrable thesaurus" https://smartdefine.org/demonstrable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, demonstrable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/demonstrable/thesaurus/synonyms>.
MLASmart Define. "demonstrable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/demonstrable/thesaurus/synonyms>