Narcissist (noun)

A person who is overly in love with themselves and their own appearance, qualities, and abilities.

Origin:

The word 'narcissist' is derived from the greek myth of narcissus, who fell in love with his own reflection.

Examples:

1. She was a classic narcissist, always admiring herself in the mirror and talking about her accomplishments.
2. His classmates had long suspected that he was a narcissist due to the way he bragged about himself constantly.
3. The film was a cautionary tale about the dangers of becoming a narcissist.
4. The research paper analyzed the personality traits of a typical narcissist.
5. The therapist advised her patient to avoid relationships with narcissists, who would only bring them down.