1. settled or confirmed in a habit, practice, feeling, or the like: an inveterate gambler.
2. firmly established by long continuance, as a disease, habit, practice, feeling, etc.; chronic.
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1. hardened, constant, habitual.
2. set, fixed, rooted.
Origin: 1375-1425; late Middle English < Latin inveterātus (past participle of inveterāre to grow old, allow to grow old, preserve), equivalent to in- in- + veter- (stem of vetus) old + -ātus -ate; cf. veteran
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