Adjective or adverb describing promotion of self or group one belongs to

Is there an adjective or adverb depicting self-promotion (or promotion of a group one belongs to)?

I am thinking of something that has a somewhat negative connotation, in the spirit of phrases

  • patting yourself on the back
  • shameless self-plug

A person who engages in shameless self-promotion is self-aggrandizing.

Merriam-Webster's pithy definition:

self-aggrandizing, adjective: acting or seeking to make oneself greater.


Exhibitionism (noun) is behaviour to make people notice you and is usually used with a negative connotation.