The act of duping or the condition of having been duped.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "dupery" in a sentence
"Rebecca turns to deception in order to correct her husband's blindness -- more metaphorical than literal -- and give the blessing to its more deserving recipient, Jacob, whom she now ropes into the dupery."
"Prog blogs is no doubt over flowing with tales of how Iggy is the superior choice, a statesman, a man of the people, a Canadian full of Canadian Canadianishness with just a dash of leaderific super dupery to boot."
"Famous families are not immune to dupery, however."