moiety actglossary / MOIETY ACT moiety act. Criminal law. A law providing that a portion (such as half) of an imposed fine will inure to the benefit of the informant. [Cases: Fines 21.] 词条贡献者 资深译员Steven,毕业于美国一流的高级翻译学院,专注翻译各种与政府政策有关的法律文件。