egoism
noun [uncountable] (disapproving)the fact of thinking that you are better or more important than anyone else 利己主义；自高自大；自负；自我主义 His egoism prevented him from really loving anyone but himself. 他自高自大，这使他除了他自己，不可能真正地去爱一个人。
Word Originlate 18th cent.: from French égoïsme and modern Latin egoismus, from Latin ego ‘I’.