Definition of "duplicitous" [du•plic•i•tous]

• Given to or marked by deliberate deceptiveness in behavior or speech. (adjective)

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.

• "The moment of high drama came when members of the Iraqiya bloc - which, by a slim margin, won more seats in Iraq's 325-member parliament than any other bloc - walked out of the session to protest what they called duplicitous tactics by political rivals and broken promises to roll back a controversial law that they feel unfairly targeted their members."
• "He did brief officials, including MacKay, about the problems of the NDS, which he described as duplicitous and open to manipulation by politically powerful people behind the scenes."
• "Go hangout with Sarah and Dick and continue to live in duplicitous stupid bliss!"