DUPE

dupe. Dupe, v.t. to cheat, trick, deceive, impose on

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Dupe (dūp), n. [[F., prob. from Prov. F. dupe, dube; of unknown origin; equiv. to F. huppe hoopoe, a foolish bird, easily caught. Cf. Armor. houpérik hoopoe, a man easily deceived. Cf. also Gull, Booby.]] One who has been deceived or who is easily deceived; a gull; as, the dupe of a schemer.