A bogeyman is someone whose ideas or actions are disapproved of by some people, and who is described by them as evil or unpleasant in order to make other people afraid.
例句
The media depict him as a left-wing bogeyman.媒體把他描述成一個左翼大反派。
N-COUNT
（父母用來嚇唬小孩的）鬼怪，妖怪
A bogeyman is an imaginary evil spirit. Some parents tell their children that the bogeyman will catch them if they behave badly.