Synonyms and related words :
abiding, accustomed, acknowledged, addicted, admitted, age-long, aged, ancient, antique, chronic, confirmed, constant, continuing, conventional, customary, deep-dyed, deep-engraven, deep-fixed, deep-grounded, deep-laid, deep-rooted, deep-seated, deep-set, deep-settled, diuturnal, durable, dyed-in-the-wool, embedded, embossed, enduring, engrafted, engraved, entrenched, established, etched, evergreen, fast, firmly established, fixed, folk, graven, habitual, habituated, hallowed, handed down, hardened, hardy, heroic, hoary, immemorial, immutable, implanted, impressed, imprinted, inbred, incorrigible, inculcated, indelibly impressed, indurated, infixed, ingrained, ingrown, innate, instilled, intransient, inwrought, irreversible, lasting, legendary, lifelong, long-established, long-lasting, long-lived, long-standing, long-term, longeval, longevous, macrobiotic, mythological, of long duration, of long standing, of the folk, old, old-line, on a rock, on bedrock, oral, perdurable, perduring, perennial, permanent, perpetual, persistent, persisting, prescriptive, received, recognized, remaining, rooted, sempervirent, set, settled, settled in habit, stabilized, stable, staying, steadfast, sworn, thorough, time-honored, tough, traditional, tried and true, true-blue, understood, unfading, unwritten, usual, venerable, vested, vital, well-established, well-founded, well-grounded, well-set, well-settled, worshipful