/ʌnˈɔːθəraɪzd ækt/ – Phrase
Definition: hành vi không được phép.
A more thorough explanation: An unauthorized act refers to an action or conduct that is carried out without proper permission, consent, or legal authority. It involves engaging in an activity or behavior that is not permitted or sanctioned by law, regulations, or established rules.
Example: The employee was terminated for engaging in an unauthorized act of disclosing confidential company information to a competitor.