egomaniac /ˌiːgoʊˈmeɪniˌæk/ noun plural egomaniacs
plural egomaniacs
Learner's definition of EGOMANIAC
[count]
: someone who does not care about other people and thinks that their problems and concerns are not important : a very egotistical person利己主义者；极端自我主义者
— egomania
noun [noncount]