Source : Webster's Revised Unabridged Dictionary (1913)

Counterfeit \Coun"ter*feit\, v. t. [imp. & p. p.
   {Counterfeited}; p. pr. & vb. n. {Counterfeiting}.]
   1. To imitate, or put on a semblance of; to mimic; as, to
      counterfeit the voice of another person.

            Full well they laughed with counterfeited glee At
            all his jokes, for many a joke had he. --Goldsmith.

   2. To imitate with a view to deceiving, by passing the copy
      for that which is original or genuine; to forge; as, to
      counterfeit the signature of another, coins, notes, etc.