egomaniac /ˌiːɡəʊˈmeɪnɪæk, ˌɛg-/ (egomaniacs)

• 1.  

  N-COUNT（可数名词） An egomaniac is someone who thinks only of themselves and does not care if they harm other people in order to get what they want. 利己主义者[表不满]

  例：

  Arnie is clever enough, but he's also an egomaniac.

  阿尼很聪明，但他又是一个利己主义者。