A legal act done from or on one side only is done:

The term "ex parte" refers to a legal action taken by one party in the absence of the other party, often in the context of court proceedings. In such situations, the decision or action is made based solely on the information or arguments presented by one side, without the opportunity for the opposing side to present its case or respond. This practice is typically employed in urgent matters where immediate action is necessary, and notifying the other party may cause harm or delay.

Using "ex parte" allows for a provisional ruling or order, often seen in emergencies or matters requiring swift judicial intervention. The concept is significant in ensuring that legal processes can occur efficiently when immediate action is warranted, although it can also raise concerns regarding fairness and due process if misused.

Understanding "ex parte" in the context of legal actions illustrates its crucial importance in court proceedings and how it ensures that necessary judicial responses can be made, albeit with the caution that such actions should be used judiciously to maintain balance and fairness in the legal system.