Synonyms and related words :
absolute, actual, admitting no question, apodictic, apparent, attestable, authenticatable, certain, checkable, conclusive, confirmable, demonstratable, demonstrated, displayable, displayed, evident, evincible, exhibitable, exhibited, factual, historical, inappealable, incontestable, incontrovertible, indisputable, indubitable, irrefragable, irrefutable, manifest, obvious, positive, provable, real, self-evident, shown, substantiatable, supportable, sustainable, testable, unanswerable, unconfutable, undeniable, unimpeachable, unquestionable, unrefutable, validatable, verifiable,