serious offenseglossary / serious offense An offense not classified as a petty offense and usu. carrying at least a six-month sentence. — Also termed serious crime. Cf. petty offense. 词条贡献者 资深译员陈鹏,毕业于国内顶尖的高级翻译学院,擅长翻译各类与全球贸易及投资相关的法律文件。