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[in-vet-er-it] /ɪnˈvɛt ər ɪt/
settled or confirmed in a habit, practice, feeling, or the like:
an inveterate gambler.
firmly established by long continuance, as a disease, habit, practice, feeling, etc.; chronic.
Origin of inveterate
late Middle English
1375-1425; late Middle English < Latin inveterātus (past participle of inveterāre to grow old, allow to grow old, preserve), equivalent to in- in-2 + veter- (stem of vetus) old + -ātus -ate1; cf. veteran
Related forms
inveterately, adverb
inveterateness, noun
1. hardened, constant, habitual. 2. set, fixed, rooted. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for inveterate
Contemporary Examples
Historical Examples
  • But of all others, they are the most inveterate, which are produced on account of religion.

  • The result was, that he more than recovered his possessions, and died an inveterate miser.

    Self-Help Samuel Smiles
  • But why then, will you say, are they so inveterate against it?

    A Letter to Dion Bernard Mandeville
  • Yet his inveterate surliness the rascal could not wholly conquer.

    The Shame of Motley Raphael Sabatini
  • The lower classes all over the country are inveterate thieves.

    Aztec Land Maturin M. Ballou
British Dictionary definitions for inveterate


long established, esp so as to be deep-rooted or ingrained: an inveterate feeling of hostility
(prenominal) settled or confirmed in a habit or practice, esp a bad one; hardened: an inveterate smoker
(obsolete) full of hatred; hostile
Derived Forms
inveteracy, inveterateness, noun
inveterately, adverb
Word Origin
C16: from Latin inveterātus of long standing, from inveterāre to make old, from in-² + vetus old
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for inveterate

late 14c., from Latin inveteratus "of long standing, chronic," past participle of inveterare "become old in," from in- "in, into" (see in- (2)) + veterare "to make old," from vetus (genitive veteris) "old" (see veteran).

Online Etymology Dictionary, © 2010 Douglas Harper
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inveterate in Medicine

inveterate in·vet·er·ate (ĭn-vět'ər-ĭt)

  1. Firmly and long established; deep-rooted.

  2. Persisting in an ingrained habit; habitual.

in·vet'er·a·cy (-ər-ə-sē) or in·vet'er·ate·ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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