deficiency suitglossary / DEFICIENCY SUIT deficiency suit. An action to recover the difference between a mortgage debt and the amount realized on foreclosure. See deficiency judgment under JUDGMENT. [Cases: Mortgages 561. C.J.S. Mortgages § 949.] 词条贡献者 资深译员Daniel,国际知名法学院法律英语专业,擅长翻译涉及工程与建设领域的法律文件。