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alter ego: Meaning and Definition of
al•ter e•go
Pronunciation: (ôl'tur ē'gō, eg"ō, al'-), [key] - 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.