express agencyglossary / express agency An actual agency arising from the principal’s written or oral authorization of a person to act as the principal’s agent. Cf. implied agency. [Cases: Principal and Agent 96. C.J.S. Agency §§ 148–149.] 词条贡献者 资深译员David,毕业于亚洲顶尖的高级翻译学院,擅长翻译有关汽车业的法律文件。