WordReference Random House Learner's Dictionary of American English © 2017
dupe1 /dup, dyup/USA pronunciation   n., v.,  duped, dup•ing. 
n. [countable]
  1. a person who is easily tricked:He was the dupe of the racketeers.
  2. a person who serves a cause without question:The senator accused them of being dupes of a communist conspiracy.

  1. to make a dupe of;
    trick: [+ object]The agency duped her.[+ object + into + object]They had duped me into the sale.
dup•er, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2017
dupe1  (do̅o̅p, dyo̅o̅p),USA pronunciation n., v.,  duped, dup•ing. 
  1. a person who is easily deceived or fooled;
  2. a person who unquestioningly or unwittingly serves a cause or another person:a dupe of the opponents.

  1. to make a dupe of;
dupa•ble, adj. 
dup′a•bili•ty, n. 
duper, n. 
  • Vulgar Latin *uppa, Latin upupa hoopoe, a bird thought to be especially stupid; compare hoopoe
  • French; Middle French duppe for *(tête) d'uppe head of hoopoe, i.e., fool (cf tête de fou)
  • 1675–85

dupe2  (do̅o̅p, dyo̅o̅p),USA pronunciation n., v.,  duped, dup•ing, adj. [Informal.]
  1. Informal Termsduplicate.
  2. Cinema, Show Business[Motion Pictures.]
    • Cinemaa duplicate picture negative used for making additional release prints or for making special effects to be inserted in the release negative.
    • Cinemathe procedure for producing such a duplicate.
  3. Cinema, Radio and Television, Show Business[Television.]a duplicate videotape obtained by electronic printing of the original videotape.

v.t., v.i. 
  1. to duplicate.

  1. duplicate.
  • by shortening 1895–90

Collins Concise English Dictionary © HarperCollins Publishers::

dupe /djuːp/ n
  1. a person who is easily deceived
  1. (transitive) to deceive, esp by trickery; make a dupe or tool of; cheat; fool
Etymology: 17th Century: from French, from Old French duppe, contraction of de huppe of (a) hoopoe (from Latin upupa); from the bird's reputation for extreme stupidity

ˈdupable adj ˈduper n ˈdupery n

'duping' also found in these entries:

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