Ar"ro*gate (&?;), v. t. [imp. & p. p. Arrogated (&?;); p. pr. & vb. n. Arrogating (&?;).] [L. arrogatus, p. p. of adrogare, arrogare, to ask, appropriate to one's self; ad + rogare to ask. See Rogation.] To assume, or claim as one's own, unduly, proudly, or presumptuously; to make undue claims to, from vanity or baseless pretensions to right or merit; as, the pope arrogated dominion over kings.

He arrogated to himself the right of deciding dogmatically what was orthodox doctrine.
Macaulay.

• To appropriate or lay claim to something for oneself without right