Alternative form of perfect is the enemy of good

(law) A legal remedy in which the court orders a party to perform a specific act, such as fulfilling the terms of a contract.

plural of performance artist

(number theory, recreational mathematics) A magic square of order n containing the numbers 1 to n² and where each 2 × 2 subsquare sums to 2s, where s = n² + 1, and all pairs of integers distant n/2 along a (major) diagonal sum to s.

plural of most-perfect magic square

Any type of entertainment performed by an artist in a public place, usually for donated money.

(poetic, derogatory) The United Kingdom, seen as a country that is manipulative, deceptive, or treacherous on the international stage.

Alternative letter-case form of Perfidious Albion.

plural of perfect cadence

(music, chiefly UK) A cadence involving the resolution of the dominant chord (V) to the root chord (I).