chronic

I

(New American Roget's College Thesaurus)

adj. continuing, persistent, constant; inveterate, rooted. See continuity, habit. Ant., acute.

II

(Roget's IV) modif.

Syn. inveterate, confirmed, settled, habitual, hardened, rooted, deep-seated, continuing, persistent, persisting, stubborn, uncured, incurable, lasting, unyielding, tenacious, enduring, lingering, deep-rooted, abiding, perennial, perpetual, constant, fixed, continual, incessant, long-standing, recurring, continuous, of long duration, long-lived, unabating, protracted, ceaseless, sustained, lifelong, prolonged, recurrent, periodic, intermittent, continued, obstinate, incorrigible, unceasing, inborn, inbred, ingrained, ever-present; see also habitual 1 , permanent 2 .

Ant. acute, temporary*, casual.

Syn.- chronic suggests long duration or frequent recurrence and is used especially of diseases or habits that resist all efforts to eradicate them [chronic sinusitis ] ; inveterate implies firm establishment as a result of continued indulgence over a long period of time [ an inveterate liar ] ; confirmed suggests fixedness in some condition or practice, often from a deep-seated aversion to change [ a confirmed bachelor ] ; hardened implies fixed tendencies and a callous indifference to emotional or moral considerations [ a hardened criminal ]

III

(Roget's 3 Superthesaurus) a.

long-term, recurrent, perpetual, constant, habitual, prolonged, protracted, lingering, persistent, stubborn, unabating, continual.

ANT.: short-term, temporary

IV

(Roget's Thesaurus II) adjective 1. Of long duration: continuing, lingering, persistent, prolonged, protracted. See CONTINUE. 2. Familiar through repetition: accustomed, habitual, routine. See USUAL. 3. Subject to a disease or habit for a long time: confirmed, habitual, habituated, inveterate. See CONTINUE.