Someone who is egotistic or egotistical behaves selfishly and thinks they are more important than other people.
例句
Susan and Deborah share an intensely selfish, egotistic streak.苏珊和德博拉两个人都极端自私和自我。
英英词典释义
Adjective
1. characteristic of those having an inflated idea of their own importance
2. characteristic of false pride; having an exaggerated sense of self-importance;
"a conceited fool""an attitude of self-conceited arrogance""an egotistical disregard of others""so swollen by victory that he was unfit for normal duty""growing ever more swollen-headed and arbitrary""vain about her clothes"