: a trial that has no legal effect with regard to one or more of the charges brought against the defendant because of some serious error or prejudicial misconduct in the proceedings or a hung jury

Examples of mistrial in a Sentence

The judge declared a mistrial.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If a mistrial is declared in this instance, the feds could attempt another trial with a new jury and hope for a better outcome. Dominic Patten, Deadline, 25 June 2026 The exchange ended with defense attorney Mark Daniel requesting a mistrial for the fifth time in three days. Lillie Davidson, Fort Worth Star-Telegram, 26 June 2026 The second retrial also ended in mistrial this May, due to jury deadlock. Bethy Squires, Vulture, 26 June 2026 For various other reasons, the judge ended up declaring a mistrial, and some of the jurors subsequently spoke to the press about their opinion of the case. Lance Eliot, Forbes.com, 29 June 2026 See All Example Sentences for mistrial

Word History

First Known Use

1628, in the meaning defined above

Time Traveler
The first known use of mistrial was in 1628

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Cite this Entry

“Mistrial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mistrial. Accessed 7 Jul. 2026.

Kids Definition

: a trial that is cancelled because of an error in the proceedings

Legal Definition

: a trial that terminates without a verdict because of error, necessity, prejudicial misconduct, or a hung jury see also manifest necessity compare dismissal sense 2, trial de novo

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