Available Definitions:
1) a. - Old; long-established.
2) a. - Firmly established by long continuance; obstinate; deep-rooted; of long standing; as, an inveterate disease; an inveterate abuse.
3) a. - Having habits fixed by long continuance; confirmed; habitual; as, an inveterate idler or smoker.
4) a. - Malignant; virulent; spiteful.
5) v. t. - To fix and settle by long continuance.