(1):
(n.) 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.
(2):
(n.) Malignity; spitefulness; virulency.
A timeless resource no serious scholar should be without. With more than 75,000 entries, if it is a word used in the Bible, you are sure to find it defined here.Wikipedia
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