Medical Definition of narcissistic personality disorder. : a personality disorder characterized especially by an exaggerated sense of self-importance, persistent need for admiration, lack of empathy for others, excessive pride in achievements, and snobbish, disdainful, or patronizing attitudes.
For the purposes of sym metry, letâs now move on to the most common variant of syn- , or sym- , which also means âtogether.â A sym phony is the sounding âtogetherâ of many instruments.
A syn onym is a word that can be placed âtogetherâ with another because they have similar meanings. The syn tax of a sentence is the way in which words are put âtogetherâ so that they make sense. A Jewish house of worship is called a syn agogue, which etymologically means a place where people are led âtogetherâ to worship.