/ɪnˈfɔːmənt/ – Noun
Definition: 1. người đưa đơn tố giác;
2. người cung cấp thông tin, người thông báo,người mật báo.
A more thorough explanation: An informant is a person who provides information to law enforcement or other authorities about criminal activities or individuals involved in criminal activities, typically in exchange for some form of benefit or protection.
Example: The informant provided crucial information to the authorities, leading to the arrest of the suspect.