1. excessively self-centered; concerned chiefly with one's own interests and welfare
Usage: often used to describe behavior or attitudes that prioritize personal gain over others' needs
2. of or relating to egoism; based on the philosophical doctrine that self-interest is the proper motive for all human conduct
Usage: philosophical or formal usage

Examples

• His egoistic behavior made it difficult for him to maintain friendships.
• She was criticized for her egoistic refusal to help others in need.
• The egoistic philosophy argues that people naturally act in their own self-interest.
• His egoistic comments about his achievements annoyed his teammates.
• An egoistic person often struggles to empathize with others' problems.
• The company's egoistic focus on profits ignored environmental concerns.