(a.) of or pertaining to history, or the record of past events; as, an historical poem; the historic page.

absolute actual admitting no question ascertained attested authentic authenticated autobiographical biographical categorically true certain certified chronologic confirmable confirmed corroborated de facto demonstrable demonstratable demonstrated determined documentary documented effectual established factual for real genuine hagiographic historic historied historiographic honest-to-God inappealable incontestable incontrovertible indisputable indubitable irrefragable irrefutable legendary martyrologic not in error objectively true positive provable proved real recorded reliable self-evident substantial substantiated sure-enough testable traditional TRUE true as gospel truthful unanswerable unconfutable unconfuted undeniable undenied undoubted unerroneous unfallacious unfalse unimpeachable unmistaken unquestionable unrefutable unrefuted validated veracious verifiable verified veritable