Definition of unauthorized adjective from the Oxford Advanced Learner's Dictionary



(British English also -ised) adjective
BrE BrE//ʌnˈɔːθəraɪzd//
; NAmE NAmE//ʌnˈɔːθəraɪzd//
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without official permission No access for unauthorized personnel. opposite authorize unauthorized use of public funds an unauthorized biography (= written without the subject’s permission or help)Extra examples Failure to complete the form will result in absences being regarded as unauthorized. Schools completed a questionnaire on attendance and unauthorized absence. There are special precautions to prevent unauthorized personnel from gaining access. There was a ban on all unauthorized marches. They violated international law by making unauthorized broadcasts to the mainland. Unauthorized access is a criminal offence under the Computer Misuse Act.
See the Oxford Advanced American Dictionary entry: unauthorized