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 资深译员维皓,毕业于一所培养高级翻译以及跨文化事务专家的精英大学,专注翻译各种与反垄断诉讼有关的法律文件。