Inveterate1. (a.) Long-established; habitual; chronic, as an inveterate liar.
2. (a.) Firmly established by long continuance; obstinate; deep-rooted; of long standing; as, an inveterate disease; an inveterate abuse.
3. (a.) Having habits fixed by long continuance; confirmed; habitual; as, an inveterate idler or smoker.
4. (a.) Malignant; virulent; spiteful.
5. (v. t.) To fix and settle by long continuance.
Thesaurus Entries
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