'Impersonator' definitions:

Definition of 'impersonator'

From: WordNet
noun
Someone who (fraudulently) assumes the appearance of another [syn: impersonator, imitator]

Definition of 'Impersonator'

From: GCIDE
  • Impersonator \Im*per"son*a`tor\, n. One who impersonates; an actor; a mimic. [1913 Webster]