doppelganger
dop·pel·gan·ger
noun
1.
a ghostly double of a living person that haunts its living counterpart
Origin
Borrowed from German Doppelgänger (“ghostly spirit”, literally “double-walker”).
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.