nar·cis·san \(ˈ)när|sisən\adjective Usage: often capitalized Etymology:Narcissus, beautiful youth of Greco-Roman mythology who fell in love with his own image, died of unrequited love and was turned into the flower narcissus (from Latin, from Greek Narkissos) + English -an 1.: of or relating to the mythological Narcissus 2.: narcissistic