/ˈʌndər ˈpɛnəlti/ – Phrase
Definition: đang chịu hình phạt, có nguy cơ phải chịu hình phạt.
A more thorough explanation: “Under penalty” refers to being subject to punishment or consequences as prescribed by law.
Example: The defendant was ordered to return the stolen property to the rightful owner under penalty of contempt of court.