Definition of peremptory adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//pəˈremptəri//
; NAmE NAmE//pəˈremptəri//
(formal, disapproving)
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(especially of somebody’s manner or behaviour) expecting to be obeyed immediately and without question or refusal a peremptory summons The letter was peremptory in tone. with a peremptory wave of his hand Word Origin late Middle English (as a legal term): via Anglo-Norman French from Latin peremptorius ‘deadly, decisive’, from perempt- ‘destroyed, cut off’, from the verb perimere, from per- ‘completely’ + emere ‘take, buy’.
See the Oxford Advanced American Dictionary entry: peremptory