Source : Webster's Revised Unabridged Dictionary (1913)

Faker \Fak"er\, n. [Often erroneously with fakir.]
   One who fakes something, as a thief, a peddler of petty
   things, a workman who dresses things up, etc. [Slang]

Source : WordNet®

faker
     n : a person who makes deceitful pretenses [syn: {imposter}, {impostor},
          {pretender}, {fake}, {fraud}, {sham}, {shammer}, {pseudo},
          {pseud}, {role player}]