doppelgänger
Variant(s): or dop·pel·gang·er /'dä-p&l-"ga[ng]-&r, -"ge[ng]-, "dä-p&l-'/
Function: noun
Etymology: German Doppelgänger, from doppel- double + -gänger goer
1 : a ghostly counterpart of a living person
2 a : DOUBLE
2a b : ALTER EGO
b c : a person who has the same name as another