narcissistic

UK: ˌnɑː.sɪˈsɪs.tɪk | US: ˌnɑːr.səˈsɪs.tɪk

Definition
  1. adj. excessively self-absorbed or vain

  2. adj. relating to narcissism or narcissistic personality disorder

Structure
narciss <self-love, from Greek Narkissos>istic <adjective suffix, from Greek -istikos>
Etymology

The word derives from the Greek myth of Narcissus, a youth who fell in love with his own reflection. The root narciss- preserves this idea of self-obsession, while -istic turns it into an adjective. Over time, "narcissistic" evolved to describe both pathological self-admiration (in psychology) and everyday vanity.

Examples
  1. His narcissistic behavior made it difficult for others to connect with him.

  2. The celebrity's narcissistic tendencies were evident in every interview.

  3. Narcissistic personality disorder involves an inflated sense of self-importance.

  4. She criticized the narcissistic culture of social media influencers.

  5. The manager’s narcissistic leadership style demoralized the team.