/ˈweɪvə/ – noun
Definition: 1. việc khước từ (quyền, yêu cầu, đặc quyền);
2. giấy khước từ;
3. người khước từ quyền của mình.
A more thorough explanation: A waiver is a voluntary and intentional relinquishment or abandonment of a known legal right or privilege. It is a formal document or statement indicating that a person has voluntarily given up a right or claim.
Example: The employee signed a waiver releasing the company from any liability in case of injury during the team-building activity.