conceited
US /kənˈsiː.t̬ɪd/
UK /kənˈsiː.t̬ɪd/

1.
自负的, 自大的, 自命不凡的
excessively proud of oneself; vain
:
•
He's so conceited that he thinks he's the best at everything.
他太自负了,认为自己在任何事情上都是最好的。
•
Her conceited attitude made her unpopular among her peers.
她自负的态度使她在同龄人中不受欢迎。