A writ is a formal order issued by a court or other legal authority directing that something be done, produced, or enforced. Different kinds of writs serve different functions, ranging from review of lower-court decisions to commands aimed at officials, parties, or custodians.

Writs are an old but still important procedural tool, and modern practice continues to recognize specific forms such as writs of certiorari, mandamus, habeas corpus, and execution.

Writ Explained

Cornell Wex explains that a writ is an order issued by a legal authority, typically a court, and lists several major types of writs used in American practice. The All Writs Act, 28 U.S.C. § 1651, likewise provides that federal courts may issue all writs necessary or appropriate in aid of their jurisdiction and agreeable to the usages and principles of law.

The Term Writ in Different Legal Contexts

The specific meaning of writ depends on the kind of writ involved. Some writs are used to obtain appellate review, some to challenge detention, some to compel official action, and others to enforce judgments or preserve jurisdiction.

Because each writ has its own doctrinal history and requirements, lawyers usually refer to the specific type of writ rather than treating all writs as interchangeable.

Common Misconceptions About the Meaning of Writ

A common misconception is that writ is a single modern filing with one uniform purpose. In reality, it is a category of court orders with many specialized forms and uses.

Another misconception is that writ practice is obsolete. Writs still matter in appellate review, detention challenges, judgment enforcement, and other procedural settings.