自高自大

自高自大 [zì gāo zì dà]

1. ■ have a high opinion of oneself; arrogant; assume great airs; be above oneself; be as vain as a peacock; be conscious of one's importance; be disgustingly self-satisfied;be full of conceit; be on [get on] the high horse; be self-assertive; conceited; get too big for one's boots [breeches; shoes]; go about with one's head in the air; high-blown; imagine oneself to be superior to others; look down upon all others; have an overweening opinion of oneself; self-important and self-exalted; think highly of oneself; swelled head; swollenheaded