Old; long established. It is an inveterate and received opinion-- .

Deep rooted; firmly established by long continuance; obstinate; used of evils; as an inveterate disease; an inveterate abuse; an inveterate course of sin.

Having fixed habits by long continuance; used of persons; as an inveterate sinner.

Violent; deep rooted; obstinate; as inveterate enmity or malice.

To fix and settle by long continuance.