INVETERATE
chronic, inveterate
(adjective) habitual; “a chronic smoker”
chronically, inveterate
(adverb) in a habitual and longstanding manner; “smoking chronically”
Source: WordNet® 3.1
Etymology
Adjective
inveterate (comparative more inveterate, superlative most inveterate)
firmly established from having been around for a long time; of long standing
(of a person) Having had a habit for a long time
Malignant; virulent; spiteful.
Synonyms
• deep-rooted, ingrained, ineradicable, radicated, hardened, chronic
Antonyms
• casual
• transient
Verb
inveterate (third-person singular simple present inveterates, present participle inveterating, simple past and past participle inveterated)
(obsolete) To fix and settle after a long time; to entrench.
Anagrams
• Everettian, entreative
Source: Wiktionary
In*vet"er*ate, a. Etym: [L. inveteratus, p. p. of inveterare to
render old; pref. in- in + vetus, veteris, old. See Veteran.]
1. Old; long-established. [Obs.]
It is an inveterate and received opinion. Bacon.
2. Firmly established by long continuance; obstinate; deep-rooted; of
long standing; as, an inveterate disease; an inveterate abuse.
Heal the inveterate canker of one wound. Shak.
3. Having habits fixed by long continuance; confirmed; habitual; as,
an inveterate idler or smoker.
4. Malignant; virulent; spiteful. H. Brooke.
In*vet"er*ate, v. t.
Definition: To fix and settle by long continuance. [Obs.] Bacon.
Source: Webster’s Unabridged Dictionary 1913 Edition