Inveteracy
Inveteracy , noun
[From Inveterate.]
1.
Firm establishment by long continuance; firmness or deep-rooted obstinacy of any quality or state acquired by time; as, the inveteracy of custom, habit, or disease; -- usually in a bad sense; as, the inveteracy of prejudice or of error.
An inveteracy of evil habits that will prompt him to contract more.
2.
Malignity; spitefulness; virulency.
The rancor of pamphlets, the inveteracy of epigrams, and the mortification of lampoons.