suretyship by operation of lawglossary / suretyship by operation of law A suretyship that the law creates when a third party promises a debtor to assume and pay the debt that the debtor owes to a creditor. [Cases: Principal and Surety 14. C.J.S. Principal and Surety § 35.] 词条贡献者 译员Matthew,毕业于英国顶尖的高级翻译学院,专注翻译各种与争议解决有关的法律文件。