Describes an attitude of looking down on others, acting superior, or being self-important. Often used for behavior, speech, or manner.
I can't stand his arrogant attitude.
If you act haughtily, people around you will dislike you.
尊大 describes acting self-importantly and pompously, whereas 傲慢 focuses on looking down on and disdaining others.
尊大 describes acting overbearing and self-important, contrasting with the self-abasing 卑屈.
Compound of 尊 (revered, noble) and 大 (big, great), suggesting an attitude of treating oneself as great and noble. The exact historical derivation is uncertain.