INVET'ERATE, adjective [Latin inveteratus, invetero; in and vetero, from vetus, old.] 1. Old; long established. It is an inveterate and received opinion-- 2. Deep rooted; firmly established by long continuance; obstinate; used of evils; as an inveterate disease; an inveterate abuse; an inveterate course of sin. 3. Having fixed habits by long continuance; used of persons; as an inveterate sinner. 4. Violent; deep rooted; obstinate; as inveterate enmity or malice. INVET'ERATE, verb transitive [Latin invetero, to grow old.] To fix and settle by long continuance. [Obsolete or little used.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI