dupe
n. countable C2 Proficiency US //ˈdup// UK //djˈuːp// dupe
n. a person who is easily tricked or fooled by someone else. You use this word for someone who is too trusting and gets taken advantage of.
n. a person who is easily deceived or tricked by another. Often carries a pejorative or slightly humorous tone in informal contexts.
He was a total dupe for the scammer's story.
The con artist targeted the elderly man, who was a perfect dupe for his elaborate scheme.
While the plot was technically sound, the protagonist's role as a dupe for the villain's plan felt somewhat forced and unconvincing to the audience.
From French duper, from Middle French duppe, alteration of huppe (“hoopoe”), from Latin, onomatopoeic.
Clipping of duplicate.