leaving no opportunity for denial or refusal; imperative: a peremptory command.
Definition: 2
imperious or dictatorial.
Definition: 3
positive or assertive in speech, tone, manner, etc.
Definition: 4
Law. that precludes or does not admit of debate, question, etc.: a peremptory edict. decisive or final. in which a command is absolute and unconditional: a peremptory writ.
Definition: 5
urgent or commanding: a peremptory ring on the bell