ar ‧ ro ‧ gate /ˈærəɡeɪt/ BrE AmE verb
[ Date: 1500-1600 ; Language: Latin ; Origin: past participle of arrogare , from Latin ad- 'to' + rogare 'to ask' ]
arrogate (to yourself) something formal to claim that you have a particular right, position etc, without having the legal right to it