1. having an excessively high opinion of oneself; self-centered and conceited

Examples

• His egotistical behavior made him unpopular with his coworkers.
• She found his constant bragging to be egotistical and annoying.
• The egotistical actor refused to share the spotlight with anyone else.
• Despite his talent, his egotistical attitude prevented him from making friends.
• The coach warned the team against becoming egotistical after their victory.
• Her egotistical comments during the meeting offended several colleagues.