What is the meaning of Peremptory?

Precluding debate or expostulation; not admitting of question or appeal.

Of a date or deadline, absolutely requiring compliance or attendance; brooking no further delay; proceeding whether a party attends or not; final.

Positive in opinion or judgment; absolutely certain, overconfident, unwilling to hear any debate or argument (especially in a pejorative sense); dogmatic.

Firmly determined, resolute; obstinate, stubborn.

Accepting no refusal or disagreement; imperious, dictatorial.

A challenge to the admission of a juror, without the challenger needing to show good cause.

Source: wiktionary.org