冒充

冒充	mào chōng	to feign / to pretend to be / to pass oneself off as
冒	mào	old variant of 冒
冒	Mào	surname Mao
冒	mào	to emit; to give off; to send out (or up, forth) / to brave; to face / (bound form) reckless / to falsely adopt (sb's identity etc); to feign / (literary) to cover
充	chōng	sufficient; full / to fill / to serve as; to act as / to act falsely as; to pose as