ab ‧ jure /əbˈdʒʊə, æb- $ -ˈdʒʊr/ BrE AmE verb [transitive]
[ Date: 1400-1500 ; Language: Latin ; Origin: abjurare , from ab- 'away' + jurare 'to swear' ]
formal to state publicly that you will give up a particular belief or way of behaving SYN renounce