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Borrowing 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 alsoEdit


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. 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 []
  4. The game of duplicate Scrabble.
  5. (botany, zoology) A biological specimen that was gathered alongside another specimen and represents the same species.