In English law, a court through which the powers, privileges, and immunities reserved to the sovereign were exercised. Such courts were originally formed during the period when the sovereign's power was greater than the Parliament's. The Star Chamber, the High Commission, and the Court of Chancery all achieved importance in the 16th century. By the 17th century they were being challenged by the common law courts and competing political interests, and they were soon put out of business. Seealso Privy Council.
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A Prerogative is an exclusive legal right given from a government or state and invested in an individual or group, the content of which is separate from the body of rights enjoyed under the general law of the normative state. It was a common facet of Feudal law.
In modern popular culture usage, the word prerogative has come to mean the egalitarian condition of the right for anyone's own self-determination, e.g. that it is "one's prerogative" to do as they please.