self-important
adj. 高傲的,妄自尊大的
If you say that someone is self-important, you disapprove of them because they behave as if they are more important than they really are.
He was self-important, vain and ignorant.
他傲慢自负,虚荣无知。
...self-important officials.
妄自尊大的官员们
1. having or showing feelings of unwarranted importance out of overbearing pride;