ad ‧ jure /əˈdʒʊə $ əˈdʒʊr/ BrE AmE verb [transitive]
[ Date: 1300-1400 ; Language: Latin ; Origin: adjurare , from ad- 'to' + jurare 'to swear' ]
formal to order or try to persuade someone to do something
adjure somebody to do something
Gwen adjured him to be truthful.