自高自大: 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;
自以为是: be opinionated; be self-righteous; believe sth. to be correct opinionately; bumptious; claim infallibility presumptuously; consider oneself always in the right; have a firm belief in one's
