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Related to narcissist: sociopath
1. Excessive preoccupation with or admiration of oneself. See Synonyms at conceit.
2. A personality disorder characterized by self-preoccupation, need for admiration, lack of empathy, and unconscious deficits in self-esteem.
3. Erotic pleasure derived from contemplation or admiration of one's own body or self, especially as a fixation on or a regression to an infantile stage of development.