Liberal Dictionary English Dictionary
noun
- a second self; a perfect substitute or deputy: His adviser acts as his alter ego during his absence.
- an inseparable friend.
- another aspect of one’s self.
noun
- a second self
- a very close and intimate friend
1530s, from Latin phrase (used by Cicero), “a second self, a trusted friend” (cf. Greek allos ego); see alter and ego.
n.
- Another side of oneself; a second self.
An intimate friend, considered another side of oneself: “He was my alter ego; we were always picking up each other’s thoughts.” Alter ego is Latin for “another I.”