egomaniac
noun [ C ] disapproving uk/ˌiː.ɡəʊˈmeɪ.ni.æk/ us/-ɡoʊ-/
自大狂，极端自我主义者
someone who considers themselvesto be very important and able to do anything that they want
Some celebs are just self-absorbed egomaniacs. 有些名人不过是自我陶醉的自大狂。