self-engrossed

adjective

self-en·​grossed ˌself-in-ˈgrōst 

-en-

: completely engrossed or absorbed with oneself

Her mind was entirely self-engrossed. She was in a reverie of sweet remembrances.

—Jane Austen

Even the greediest corporate raiders, the sleaziest pro athletes, the most self-engrossed entertainers have their circles of admirers …

—Jacquielynn Floyd

Word History

First Known Use

1801, in the meaning defined above