- The definition of inveterate is something longstanding, ingrained or unlikely to change.
A person who has smoked for 50 years is an example of someone who would be described as an inveterate smoker.
inveterate definition by Webster's New World
- firmly established over a long period; of long standing; deep-rooted
- settled in a habit, practice, prejudice, etc.; habitual
Origin: Classical Latin inveteratus, past participle of inveterare, to make or become old ; from in-, in plush vetus, old: see veteran
inveterate definition by American Heritage Dictionary
- Firmly and long established; deep-rooted: inveterate preferences.
- Persisting in an ingrained habit; habitual: an inveterate liar. See Synonyms at chronic.
Origin: Middle English, from Latin inveterātus, past participle of inveterārī, to grow old, endure : in-, causative pref.; see in-2 + vetus, veter-, old; see wet-2 in Indo-European roots.
- in·vetˈer·a·cy , in·vetˈer·ate·ness noun
- in·vetˈer·ate·ly adverb
inveterate - Medical Definition
- Firmly and long established; deep-rooted.
- Persisting in an ingrained habit; habitual.
- inveteracy noun