Narcissist
Definition 1 of 2

Negative Connotation
The word carries a negative judgment, implying extreme self-centeredness.

He was labeled a narcissist after ignoring everyone's ideas.
Overuse Caution
Don't overuse it as an insult; it's a serious trait, not just for someone who's occasionally self-centered.

Just because she took a few selfies doesn't mean she's a narcissist.
Cultural References
Familiarize with the Greek myth of Narcissus; it's where the concept originates.

Like the myth of Narcissus, he admired himself more than anyone else.
Compare with
arrogantconceitegoegocentric
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