relating to someone who considers themselves to be very important and able to do anything that they want

The office is filled with egomaniacal workaholics. 办公室里到处都是极端自我的工作狂。

In his new movie - a comedy - he plays an egomaniacal media mogul. 在他的新电影——一部喜剧片中，他扮演了一个自负的媒体大亨。