ㄇㄠˋmàoㄇㄧㄥˊmíngㄉㄧㄥˇdǐngㄊㄧˋ

  1. 假冒他人名義取代地位行事西遊記·》:便也罷怎麼柳樹冒名頂替。」儒林外史·二四》:這裡女兒冒名頂替多少混帳。」

to assume sb's name and take his place (idiom)​; to impersonate, to pose under a false name