A narcissist is a person who has an excessive admiration for oneself and a great need for attention and admiration from others.
They are characterized by having high self-esteem and believing themselves to be superior to others. They tend to constantly seek approval and recognition from others and may display egocentric and arrogant behavior.
Additionally, they often have difficulty empathizing with others and tend to exploit people for their own benefit. Narcissism can negatively affect interpersonal relationships and cause problems in social interactions.