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Borrowed from Latin duplicātus, perfect passive participle of duplicō.


Noun, adjective


  • IPA(key): /ˈdjuː.plɪˌkeɪt/
  • (file)


duplicate (not comparable)

  1. Being the same as another; identical. This may exclude the first identical item in a series, but usage is inconsistent.
    This is a duplicate entry.
  2. (games) In which the hands of cards, tiles, etc. are preserved between rounds to be played again by other players.
    duplicate whist
    duplicate Scrabble



duplicate (third-person singular simple present duplicates, present participle duplicating, simple past and past participle duplicated)

  1. to make a copy of
    If we duplicate the information, are we really accomplishing much?
  2. to do repeatedly; to do again
    You don't need to duplicate my efforts.
  3. to produce something equal to
    He found it hard to duplicate the skills of his wife.


See also[edit]


duplicate (plural duplicates)

  1. One that resembles or corresponds to another; an identical copy.
    This is a duplicate, but a very good replica.
    • Sir W. Temple
      I send a duplicate both of it and my last dispatch.
  2. (law) An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original.
    (Can we find and add a quotation of Burrill to this entry?)
  3. A pawnbroker's ticket, which must be shown when redeeming a pledged item.
    • 1819, James Hardy Vaux, Memoirs of James Hardy Vaux, Vol. II, Chapter VI, p. 207:
      "Sir, I hope you will excuse what I am going to say; but having observed that you frequently pledge similar goods to these at our shop, which are afterwards taken out by other persons, I take for granted you are in the habit of selling the duplicates; []"
  4. The game of duplicate bridge.
    • 1999, Matthew Granovetter, Murder at the Bridge Table (page 6)
      The momentary madness which infects bridge players occurs frequently at rubber bridge and duplicate; and though it rarely results in murder, it often terminates marriages and close friendships []
  5. The game of duplicate Scrabble.
  6. (botany, zoology) A biological specimen that was gathered alongside another specimen and represents the same species.






  1. second-person plural present indicative of duplicare
  2. second-person plural imperative of duplicare



  1. feminine plural of the past participle of duplicare




  1. first-person plural present active imperative of duplicō