不修边幅 bùxiū-biānfú
[be slovenly in attire and demeanour;not care about one's appearance] 指性情浪漫,行为随便,不拘小节的人。今泛指不守礼俗,行动随便,或自我为是,旁若无人者,亦指着装打扮和外貌的修饰整理不注重