Definition:
* Characterized by excessive self-importance, vanity, and a tendency to boast.
* Excessively concerned with oneself and one's own interests.
* Egotistical; narcissistic.
Usage:
* "He's so egotastic, he thinks he's the only person in the room."
* "Her egotastic behavior alienated her friends."
* "The egotastic CEO couldn't see past his own agenda."
Synonyms:
* Narcissistic
* Egotistical
* Self-centered
* Conceited
* Vainglorious
* Self-important
Antonyms:
* Humble
* Modest
* Selfless
* Unassuming