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English definition of “unauthorized”

unauthorized

adjective (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.Forbidding and banning things
(Definition of unauthorized adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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