Impostor
例子
The man was revealed as an impostor after pretending to be a famous author.
那个男人在假装是一位著名作家后被揭露为冒名顶替者。
She was caught when the impostor failed to answer a basic question about the job.
当冒名顶替者未能回答关于工作的基本问题时，她被抓住了。
