A more thorough explanation:

Definition: Peremptory means final and absolute, without needing any underlying justification. It is a command that must be followed without question or delay.

For example, in English law, tribunals can issue "peremptory orders" to force non-complying parties to follow a binding arbitration result. These orders are final and cannot be challenged or questioned.

Another example of a peremptory command is a military order. When a commanding officer gives an order, it must be followed immediately and without question. Failure to follow a peremptory order can result in serious consequences.

Overall, peremptory means that there is no room for negotiation or discussion. It is a final decision that must be followed without delay or question.