Mistrial
Mistrial: A trial that ends before a verdict without a valid result, for example because of a serious error or a jury that cannot agree. A mistrial usually means the case may be tried again.

What mistrial means
In short, mistrial is a term you will meet in court papers, rules and legal research. The definition above gives its usual meaning in American civil practice. However, the exact meaning can depend on the rule, statute or court decision that uses it. So it helps to read the term in context.
Where mistrial comes up
For example, the term appears in these procedures:
- Motion for a New Trial (Fed. R. Civ. P. 59(a)–(b)): a request that the court grant a new trial on all or some issues.
How to research the term
To research mistrial, begin with the rule, statute or contract where the word is used. Each one can give it a slightly different meaning. Then compare that text with how courts in your area have applied it. Also check the local rules of your court, since they can add requirements. If your case is in state court, the state rules control. So start with our state procedures guide to find them. In the end, always confirm that the source you rely on is current.
You can read the official rule text online for free.
Related legal terms
- Verdict: the decision of a jury on the questions submitted to it.
- Remittitur: a court's order reducing a jury's damages award that it finds excessive. In federal court, the plaintiff is usually given the choice of accepting the lower amount or having a new trial.
- Minister: a member of the clergy, or a high government official, such as a cabinet minister in a parliamentary system.
- Ministerial: describes a duty that an official must perform in a set way, without using judgment or discretion, once the required conditions are met.
Why precise terms matter
Legal words often look like everyday words, but they can carry a precise meaning. Because of that, a small misreading can change how you understand a deadline, a duty or a right. Our glossary keeps each definition short and links it to the procedures where it matters.
Sources
Sources last reviewed: 2026-10-24
Lawtopolis provides legal information and education, not legal advice. Using this site does not create an attorney-client relationship. Laws and court rules vary by jurisdiction and change over time; verify every authority against the official source and consult a licensed attorney in your jurisdiction about your situation.
