/ˈwɒrəntlɪs əˈrɛst/ – Phrase
Definition: 1. bắt giữ không có lệnh;
2. bắt giữ vô căn cứ.
A more thorough explanation: A warrantless arrest refers to the apprehension of an individual by law enforcement without the need for a warrant issued by a judge or magistrate. This type of arrest is typically allowed under specific circumstances, such as when an officer witnesses a crime being committed or has probable cause to believe that a suspect has committed a crime.
Example: The police officer made a warrantless arrest when they apprehended the suspect without obtaining a warrant from a judge.