Synonyms and related words :
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