/ɪnˈfɔːmə/ – Noun
Definition: 1. người cung cấp thông tin, người chỉ điểm;
2. người đứng đơn khiếu nại hay đơn kiện.
A more throughout explanation: An informer is a person who provides information to law enforcement authorities about criminal activities or individuals involved in criminal activities.
Example: The informer provided crucial information to the authorities, leading to the arrest of the suspect.