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.