adj old; long-established.
2. inveterate ·adj malignant; virulent; spiteful.
3. inveterate ·vt to fix and settle by long continuance.
4. inveterate ·adj having habits fixed by long continuance; confirmed; habitual; as, an inveterate idler or smoker.
5. inveterate ·adj firmly established by long continuance; obstinate; deep-rooted; of long standing; as, an inveterate disease; an inveterate abuse.