Noun: alter ego 'ol-tu(r) 'ee-gow
- A very close and trusted friend who seems almost a part of yourself
"His childhood friend had become his alter ego, understanding him better than anyone else"
- An alternate personality or persona; another aspect of oneself, often significantly different in personality or behaviour
"His online gaming character was his alter ego, allowing him to be more outgoing and adventurous"
Derived forms: alter egos
Type of: china [Brit, informal], friend, mate [Brit, informal]
Encyclopedia: Alter ego