Black's Law Dictionary (6th ed.) defines duress as "any unlawful threat or coercion used... to induce another to act in a manner otherwise would not ".
布萊克法律大辭典(第六版)定義脅迫為"任何非法威脅或強迫使用...誘使其他人行動 的方式，否則不會"( "any unlawful threat or coercion used... to induce another to act  in a manner  otherwise would not ")。