- chronic
- Synonyms and related words:abiding, accepted, accustomed, age-long, aged, ancient, antique, confirmed, constant, continuing, customary, deep-dyed, deep-fixed, deep-rooted, deep-seated, deep-set, deep-settled, diuturnal, durable, dyed-in-the-wool, enduring, established, evergreen, fast, fixed, habitual, habituated, hardened, hardy, immutable, implanted, incorrigible, inculcated, infixed, ingrained, instilled, intransient, inveterate, irreversible, lasting, lingering, long-established, long-lasting, long-lived, long-standing, long-term, longeval, longevous, macrobiotic, of long duration, of long standing, perdurable, perduring, perennial, permanent, perpetual, persistent, persisting, remaining, rooted, routine, sempervirent, set, settled, settled in habit, stable, staying, steadfast, thorough, tough, unfading, vital, wonted
Moby Thesaurus. Grady Ward. 1996.