An Encylopedia Britannica Company

alter ego

1 ENTRIES FOUND:
alter ego noun
plural alter egos
alter ego
noun
plural alter egos
Britannica Dictionary definition of ALTER EGO
[count]
: a different version of yourself
◊ A character in a book or film is sometimes viewed as an author's alter ego. A role that an actor often plays is sometimes described as the actor's alter ego.
: a close friend who thinks or feels similarly to the way you think or feel