also: イゴイスト
A person who is self-centered or acts primarily for their own benefit. Often used in psychological or everyday contexts. Compare with 利己主義者 (りこしゅぎしゃ), which is a more formal or philosophical term for an egoist.
See also: 利己主義者 (りこしゅぎしゃ)
He is an egoist who only thinks about himself.
That egoist prioritized his own fame over the team's success.