inveterate | meaning of inveterate in Longman Dictionary of Contemporary English | LDOCE

From Longman Dictionary of Contemporary Englishinveteratein‧vet‧e‧rate /ɪnˈvetərət/ adjective [only before noun] written    1 → inveterate liar/smoker/womanizer etc2 → inveterate fondness/distrust/hatred etcOrigin inveterate (1300-1400) Latin past participle of inveterare “to get old”, from vetus “old”