from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Another side of oneself; a second self.
  • n. An intimate friend or a constant companion.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Somebody's alternate personality or persona; another self.
  • n. A very close and intimate friend.

from The Century Dictionary and Cyclopedia

  • Second self; another self; counterpart; double.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a very close and trusted friend who seems almost a part of yourself


Latin : alter, other + ego, I, self.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin "other self", which is a translation of Zeno's Citium "allos ego" [2] (Wiktionary)


Sorry, no example sentences found.


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