Ego (Noun)

An inflated feeling of pride in your superiority to others.

Nouns denoting feelings and emotions.

His ego was so big that he couldn't accept even the slightest criticism from others.
After becoming a successful entrepreneur, she began to develop an ego that made her difficult to work with.
His ego wouldn't let him apologize for his mistakes, even when they were clearly his fault.
The celebrity's ego was so inflated that he insisted on having a private jet and a entourage wherever he went.
Her ego made her believe that she was the smartest person in the room, and she often talked down to others as a result.