The word "narcissistic" refers to an excessive interest in oneself, especially regarding one's appearance, abilities, or achievements. A person who is narcissistic often has a strong need for admiration and can lack empathy for others. This behavior can manifest in many ways, from showing off one's talents to feeling superior to others and seeking constant validation.
The term "narcissistic" comes from "Narcissus," a character from Greek mythology who fell in love with his own reflection in a pool of water. The word "narcissus" itself is derived from the Greek "narke," which means "to numb" or "to be lethargic," often related to the intoxicating beauty of flowers that share the name.