treasonable misdemeanorglossary / treasonable misdemeanor treasonable misdemeanor. English law. An act that is likely to endanger or alarm the monarch, or disturb the public peace in the presence of the monarch. Cf. TREASON FELONY. 词条贡献者 译者李科,毕业于世界顶级翻译学院,擅长翻译各种与国家安全审查相关的法律文件。