adj. 25B6; adjective VERIFIABLE, provable, attestable; verified, proven, confirmed; obvious, clear, clear-cut, evident, apparent, manifest, patent, distinct, noticeable; unmistakable, undeniable.
DEMONSTRABLE
Meaning of DEMONSTRABLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012