<p><strong>Noun</strong></p><ul><li>a person who is easily deceived or fooled; gull.</li><li>a person who unquestioningly or unwittingly serves a cause or another person: a dupe of the opponents.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) duped, duping.</li><li>to make a dupe of; deceive; delude; trick.</li></ul>