That sense that the future may not last for long is often assumed to be a prerogative of youth, the dialectical complement of another misconception the young are noted for—the conviction that they are immortal. — Thomas M. Disch , Atlantic ,

More important than any of this, he offered himself as an incarnation of constitutional propriety so that, temperamentally stubborn, he was careful never to exceed the limits of a prerogative overexploited by the later Stuarts. — Simon Schama , The Embarrassment of Riches ,

The secularization of the Presidency is indispensable for the reassertion of congressional and popular prerogative . — Arthur M. Schlesinger, Jr. , The Cycles of American History ,

If you'd rather sell the tickets than use them, that's your prerogative.

It's a writer's prerogative to decide the fate of her characters.