accepted accustomed acknowledged actual admitted affirmed allowed approved ascertained attested authenticated avowed borne out categorically true certain certified chronic circumstantiated conceded confessed corroborated countersigned deep-dyed deep-engraven deep-fixed deep-grounded deep-laid deep-rooted deep-seated deep-set deep-settled demonstrated determined documentary dyed-in-the-wool effectual embedded embossed endorsed engrafted engraved entrenched established etched factual fast firmly established fixed granted graven habituated historical implanted impressed imprinted incorrigible inculcated indelibly impressed infixed ingrained ingrown instilled inveterate inwrought irreversible long-established not in error notarized objectively true old-line on a rock on bedrock professed proved proven ratified real received recognized rooted sealed set settled settled in habit shown signed stabilized stamped substantiated sure-enough sworn sworn and affirmed sworn to tested thorough tried tried and true TRUE true as gospel truthful unconfuted undenied underwritten undoubted unerroneous unfallacious unfalse unmistaken unquestionable unrefuted validated veracious verified veritable vested warranted well-established well-founded well-grounded well-set well-settled