Peremptory

per′emp-tō-ri, adj. preventing debate: authoritative: dogmatical: final, determinate: fully resolved or determined: that must be done.— adv. Per′emptorily .— n. Per′empt or in e . [Fr.,—L. per empt or i us — perimĕre , peremptum— per , entirely, emĕre , to take.]