a type of unfriendly behavior that is meant to show that one is better than other people
a sense of high self-esteem or self-importance that one has

自负, 傲慢自大
to behave in a way that makes others think one is more important or of higher status than one actually is
one's arrogant and pretentious behavior that is meant to prove one's superiority over others

自高自大, 高人一等
used to describe someone who takes too much pride or satisfaction in their achievements
an action that makes one feel more important than others

自我膨胀, 自恋行为
used to describe someone who has an excessively high opinion of themselves
used for saying that a person looks extremely satisfied, happy, or proud because of something they have done or achieved
to fail to achieve success by having too much confidence in one's ability or position
behaving in a manner that highlights one's often non-existant superiority over others
someone who considers themselves more important than others and often behaves in a very formal and old-fashioned way

自以为是的人, 守旧的人
to boost or satisfy one's sense of self-importance or self-esteem
to take pride in one's deeds or achievements
