Royal Prerogative Law and Legal Definition
Royal prerogative refers to kingly power, or authority, or privilege. They are those rights and capacities which the king enjoys alone, in contradistinction to others, and not those which he enjoys in common with any of his subjects.
It also refers to the uncontrolled will of a sovereign power in the state, and is applied not only to the king but also to the legislative and judicial branches of the government. It is that special pre-eminence which a sovereign has over all other persons, and out of the course of the common law, by right of regal dignity.
In Great Britain the royal prerogative includes the right of sending and receiving ambassadors, of making treaties, and (theoretically) of making war and concluding peace, of summoning parliament, and of refusing assent to a bill, with many other political, judicial, ecclesiastical, etc., privileges. [Aetna Casualty & Surety Co. v. Bramwell, 12 F.2d 307, 309 (D. Or. 1926)].