dupe

¹ American  

[doop, dyoop] / dup, dyup /

noun

1. a person who is easily deceived or fooled; gull.

2. a person who unquestioningly or unwittingly serves a cause or another person.

   a dupe of the opponents.

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verb (used with object)

duped, duping

1. to make a dupe of; deceive; delude; trick.

dupe ² American  

[doop, dyoop] / dup, dyup /

noun

1. duplicate.

2. Movies.

   1. a duplicate picture negative used for making additional release prints or for making special effects to be inserted in the release negative.

   2. the procedure for producing such a duplicate.

3. Television. a duplicate videotape obtained by electronic printing of the original videotape.

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verb (used with or without object)

duped, duping

1. to duplicate.

adjective

1. duplicate.

dupe British  

/ djuːp /

noun

1. a person who is easily deceived

2. a person who unwittingly serves as the tool of another person or power

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verb

1. (tr) to deceive, esp by trickery; make a dupe or tool of; cheat; fool

Other Word Forms

• dupability noun
• dupable adjective
• duper noun
• dupery noun
• undupable adjective

Etymology

Origin of dupe¹

First recorded in 1675–85; from French; Middle French duppe for unattested tête d'uppe “head of hoopoe,” i.e., “fool” (compare tête de fou ), from unattested Vulgar Latin uppa, Latin upupa “hoopoe,” a bird thought to be especially stupid; cf. hoopoe

Origin of dupe²

First recorded in 1895–90; by shortening

Explanation

A dupe is a furry, ceremonial hat worn during ancient pagan rituals...or not. Dupe actually means “trick or deceive.” We’re sorry we tried to dupe you into believing the wrong definition. Dupe can also refer to the victim of a trick or hoax, and — used in this sense — it sometimes conveys the idea that the victim is easily fooled. Dupe comes from the French word for a type of bird called the hoopoe, which has an extravagant crest and a reputation for being dim-witted. (And no, that's not another attempt to dupe you; it's the truth!)

Example Sentences

Now Zahid Hasan Akhand, who introduced himself as a barrister, was talking him through the different options and how to dupe the Home Office.

From BBC • Apr. 15, 2026

Large language models are used to write convincing emails to dupe people out of their money, causing an eight-fold increase in complaints from older Americans as they lost $4.9 billion in online fraud in 2025.

From Los Angeles Times • Mar. 5, 2026

The gang even made fake double yellow lines made from stickers to dupe police.

From BBC • Mar. 4, 2026

Questions multiplied, but one seemed more elusive than the rest: How did a baby-faced novice from small-town California dupe some of academia’s brightest minds?

From The Wall Street Journal • Nov. 22, 2025

But it was Heleen she’d wanted to dupe.

From "Six of Crows" by Leigh Bardugo

Related Words

• baffle
• bamboozle
• betray
• cheat
• deceive
• defraud
• delude
• hoodwink
• mislead
• swindle
• victimize