exclusionary rule

noun
|Updated on: 15 Jul 2018

Definition of exclusionary rule

: a legal rule that bars unlawfully obtained evidence from being used in court proceedings

Recent Examples of exclusionary rule from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'exclusionary rule.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of exclusionary rule

1938

in the meaning defined above

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Law Dictionary

exclusionary rule

noun

legal Definition of exclusionary rule

: any of various rules that exclude or suppress evidence; specifically : a rule of evidence that excludes or suppresses evidence obtained in violation of a defendant's constitutional rights — see also fruit of the poisonous tree, good faith exception, Mapp v. Ohio and Wong Sun v. United States
Note: The U.S. Supreme Court established the rule that evidence gathered by a governmental agent in violation of especially the Fourth and Fifth Amendments to the U.S. Constitution cannot be admitted against a defendant. The rule is available primarily in criminal trials or quasi-criminal proceedings (as punitive administrative hearings) and must also be observed by state courts. There are various statutory exclusionary rules in addition to the rule established by the Supreme Court.

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