inadmissible
adj. C1 Advanced US //ˌɪnædˈmɪsəbəɫ// UK //ɪnɐdmˈɪsəbəl// in·ad·mis·si·ble
adj. not allowed to be used as evidence in a court of law. This usually happens because the evidence was obtained in a way that breaks the rules.
adj. not legally acceptable as evidence in a court of law. Often used to describe evidence obtained through illegal means or without proper procedure.
The judge ruled that the evidence was inadmissible.
The defense attorney argued that the witness's testimony was inadmissible because the witness was not present during the crime.
The prosecution's case was significantly weakened when the court dismissed the key piece of digital evidence as inadmissible due to a failure to maintain a proper chain of custody.
From French inadmissible, from Middle French inadmissible. Morphologically in- + admissible.