unauthorized
adjective (UK usually unauthorised) uk/ʌnˈɔː.θə.raɪzd/ us/ʌnˈɑː.θə.raɪzd/
未经授权的，未经许可的
without someone's official permission to do something or be in a particular place
Unauthorized personnel are not admitted beyond this point. 未经许可，不得进入。
This unauthorized biography of the star has sold over 10,000 copies in its first week in print. 这本未经授权的明星传记刊印后第1个星期就卖出了1万多本。