alter ego

From Latin, literally “other self”.[1][2]

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alter ego (plural alter egos)

1. Somebody's alternate personality or persona; another self.
   • 2012 May 1, Ben Child, “Mark Ruffalo gets green light to play Hulk in six-movie deal”, in the Guardian‎:

     Ruffalo's turn as Bruce Banner and his angry green alter-ego has been widely praised. Avengers Assemble (titled The Avengers outside the UK) is on course to be one of the year's biggest films and has received strong reviews.

2. A very close and intimate friend.
3. (law) A corporation used by a person to conduct personal business in an attempt to shield himself or herself from personal liability, and which a court may penetrate by "piercing the corporate veil" to impose liability on the person when they commit fraud or injustice.

• alter idem

• alter (“one identity of a person with dissociative identity disorder”, noun)

• double life

• (Portugal) IPA^(key): /ˌaɫtɛɾˈɛ.ɣu/
• (Brazil) IPA^(key): /ˌawteɾˈɛ.ɡu/
• Hyphenation: a‧mor
• Rhymes: -oɾ

alter ego m (plural alter egos)

1. alter ego (alternate personality or persona)

• outro eu

• outro

• álter ego

Borrowed from Latin alter ego (“other self”).

alter ego m (plural alter egos)

1. alter ego (alternate personality or persona)

   Synonym: otro yo

• “alter ego” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.