Peremptory

There was no point in arguing after such a peremptory command.

“Request nothing of ME, my lord,” said the stranger, in a stern and peremptory tone; “I am the Master of Ravenswood.”

NB. This saying is a bit peremptory.

there is no reason but if any of the outlawries be indeed without error, but it should be a peremptory plea to the person in a writ of error, as well as in any other action.

As this trial has now been postponed multiple times, there will be an adjournment to April 24, peremptory on the parties.

He marched under a placard reading "End Bossiness Now" but decided it was a little too peremptory, not quite British, so changed the slogan on subsequent badges, to "End Bossiness Soon."

Upon the other hand, there are a great many people who, having no private property of their own, and being always on the brink of sheer starvation, are compelled to do the work of beasts of burden, to do work that is quite uncongenial to them, and to which they are forced by the peremptory, unreasonable, degrading Tyranny of want.

[…] less surprising than that he had been depressed by a book. Something was making him nibble at the edge of stale ideas as if his sturdy physical egotism no longer nourished his peremptory heart.

Though today (surveying that yellowing document) I shudder at the peremptory tone of the instructions I gave, Alastair - in that same volume in which I get chastised for my coverage of the Macmillan rally - was generous enough to remark that my memorandum became 'an office classic'.

Each side was allowed 20 peremptories, and the prosecution used 18 of its allotment.