Definitions of fake:

• noun:   something that is a counterfeit; not what it seems to be
• noun:   (football) a deceptive move made by a football player
• noun:   a person who makes deceitful pretenses
• verb:   make a copy of with the intent to deceive

  Example: "He faked the signature"

• verb:   fake or falsify
• verb:   talk through one's hat

  Example: "The politician was not well prepared for the debate and faked it"

• adjective:   not genuine or real; being an imitation of the genuine article

  Example: "It isn't fake anything"

• adjective:   fraudulent; having a misleading appearance
• name:  A surname (very rare: popularity rank in the U.S.: #64216)