exclusionary rule exclusionary • exclusioner · · · Info · Definitions · Characters · · exclusionary rule · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) a rule that provides that otherwise admissible evidence cannot be used in a criminal trial if it was the result of illegal police conduct. Synonyms: exclusionary rule. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 x latin small letter x U+0078 y latin small letter y U+0079