1. a person who is excessively self-centered and concerned with their own interests, often at the expense of others
2. a person who believes that self-interest is the proper basis for morality and action
Usage: philosophy

Examples

• He's such an egoist that he never considers how his decisions affect his friends.
• The egoist in the group always insisted on choosing the restaurant and the movie.
• She accused him of being an egoist for refusing to compromise on the project.
• An egoist believes that pursuing personal happiness is the highest moral good.
• The team's performance suffered because their captain was an egoist who wouldn't pass the ball.
• His egoist tendencies made it difficult for him to maintain long-term relationships.