A more thorough explanation:

qui improvide

Qui improvide is a legal term that means "who unforeseeably". It refers to a court order called a supersedeas that is granted when a writ is mistakenly issued or wrongly awarded.

For example, if a judge issues a writ of execution against a defendant who has already paid the debt, the defendant can apply for a qui improvide supersedeas to stop the execution. Similarly, if a plaintiff obtains a writ of attachment against property that does not belong to the defendant, the owner of the property can seek a qui improvide supersedeas to prevent the seizure.

These examples illustrate how qui improvide can be used to correct errors in legal proceedings and protect the rights of parties who have been wrongly affected by them.