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 双语律师Wayne,国际知名法学院法律专业,擅长翻译各类与遗产及遗嘱争议相关的法律文件。