Peremptory
/pəˈɹɛmptəɹi/
noun
A challenge to the admission of a juror, without the challenger needing to show good cause.
adjective
Precluding debate or expostulation; not admitting of question or appeal
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.
Synonyms: absolute, conclusive, decisive, final, positive