Dupe vs. Perfidy — What's the Difference?

A person who is easily deceived or is used to carry out the designs of another.

In the context of war, perfidy is a form of deception in which one side promises to act in good faith (such as by raising a flag of truce) with the intention of breaking that promise once the unsuspecting enemy is exposed (such as by coming out of cover to attack the enemy coming to take the "surrendering" prisoners into custody). Perfidy constitutes a breach of the laws of war and so is a war crime, as it degrades the protections and mutual restraints developed in the interest of all parties, combatants and civilians.

To deceive (an unwary person).

Deliberate breach of faith; calculated violation of trust; treachery

A person who has been deceived.

The act or an instance of treachery.

(photography) A duplicate of a photographic image.

A state or act of violating faith or allegiance; violation of a promise or vow, or of trust

(restaurant industry) A duplicate of an order receipt printed for kitchen staff.

(legal) Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag in a false claim of surrender to gain proximity to an enemy for purposes of attack.

(informal) A duplicate.

A state or act of deceit.

A counterfeit; a fake.

The act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.

To swindle, deceive, or trick.

Betrayal of a trust

(transitive) To duplicate.

An act of deliberate betrayal

One who has been deceived or who is easily deceived; a gull; as, the dupe of a schemer.

To deceive; to trick; to mislead by imposing on one's credulity; to gull; as, dupe one by flattery.

A person who is tricked or swindled

Fool or hoax;