narcissism

As an adjective sycophantic

is obsequious, flattering, toadying.

As a noun narcissism is

excessive love of oneself.

As nouns the difference between narcissism and autism

is that narcissism is excessive love of oneself while autism is (clinical psychology) pervasive neurological disorder that is observable in early childhood and persists throughout the lifespan, characterised by atypical communication, language development, eye contact, and sensory experiences.

As an adjective nihilistic

is of or relating to nihilism.

As a noun narcissism is

excessive love of oneself.

As nouns the difference between nihilism and narcissism

is that nihilism is a philosophical doctrine grounded on the negation of one or more meaningful aspects of life while narcissism is excessive love of oneself.

As nouns the difference between grandiosity and narcissism

is that grandiosity is the state of being grandiose (pompous or pretentious) while narcissism is excessive love of oneself.

As nouns the difference between egomania and narcissism

is that egomania is excessive vanity, pride or arrogance; self-importance while narcissism is excessive love of oneself.

As nouns the difference between hedonism and narcissism

is that hedonism is the belief that pleasure or happiness is the highest good in life. Some hedonists, such as the Epicureans, have insisted that pleasure of the entire mind, not just pleasure of the senses, is the highest good while narcissism is excessive love of oneself.

As a noun narcissism

is excessive love of oneself.

As an adjective disdainful is

showing contempt or scorn; having a pronounced lack of concern for others viewed as unworthy.

As an adjective arrogant

is having excessive pride in oneself, often with contempt for others.

As a noun narcissism is

excessive love of oneself.

As nouns the difference between sarcasm and narcissism

is that sarcasm is (uncountable) a sharp form of humor, intended to hurt, that is marked by mocking with irony, sometimes conveyed in speech with vocal over-emphasis insincerely saying something which is the opposite of one's intended meaning, often to emphasize how unbelievable or unlikely it sounds if taken literally, thereby illustrating the obvious nature of one's intended meaning while narcissism is excessive love of oneself.