Related Clues:

• A superstar might have a big one
• Pompous asset?
• Swelled head cause
• Handler of defensive functions
• "Me, me, me" attitude
• More-than-healthy sense of self
• Focus of some trips
• Id's companion
• Compromise obstacle, often
• Trip that's all in one's big head
• The self, to Freud
• Diva quality
• Candidate for a boost
• Cause of team dissension
• Topic in psych 101