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.
The English prefixes syn-along with its variant sym- , derived from Greek, mean âtogether.â You can remember syn-easily by thinking of syn onym, which is a word that goes âtogetherâ with another word because it has a similar meaning.he English prefixes syn-along with its variant sym- , derived from Greek, mean âtogether.â You can remember syn-easily by thinking of syn onym, which is a word that goes âtogetherâ with another word because it has a similar meaning.