The practice of valuing everything only in reference to one's personal interest; selfishness. His egoism was evident when he refused to help others unless there was something in it for him.
A doctrine that individual self-interest is the actual motive of all conscious action. Philosophers often debate the merits and drawbacks of egoism as a guiding principle in life.
An ethical theory that treats self-interest as the foundation of morality. Egoism suggests that actions are morally right if they benefit the individual who performs them.
Excessive concern for one’s own interests or well-being; self-centeredness. Her blatant egoism made collaboration with the team nearly impossible.