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English definition of “unauthorized”

unauthorized

adjective uk (UK usually unauthorised)   /ʌnˈɔː.θə.raɪzd/ us    /-ˈɑː-/
without someone's official permission to do something or be in a particular place: No admittance to unauthorized personnel. This unauthorized biography of the star has sold over 10,000 copies in its first week in print.
(Definition of unauthorized from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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