perfidiousness

And ultimately, we can’t expect that post-truth culture will somehow collapse because of its perfidiousness.

From New York Times ● May 27, 2016

The King, according to the same document, rejected such a treacherous overture with the utmost horror, vehemently protesting against its immorality and perfidiousness.

From The Great Events by Famous Historians, Volume 09 by Rossiter Johnson

He boasted, however, that he had effected what he could "to aid the brave men who, in Monterey, have determined to die rather than succumb to the invasion and perfidiousness of the Americans."

From Mexico, Aztec, Spanish and Republican Vol. 1 of 2 A Historical, Geographical, Political, Statistical and Social Account of That Country From the Period of the Invasion by the Spaniards to the Present Time; With a View of the Ancient Aztec Empire and Civilization; A Historical Sketch of the Late War; And Notices of New Mexico and California by Brantz Mayer

What, gracious God, is man that there should be such inconsistency, and perfidiousness in his conduct!

From The Constitution of the United States A Brief Study of the Genesis, Formulation and Political Philosophy of the Constitution by James M. (James Montgomery) Beck

These inexorable words, combined with her look of pity and reproach—a look that seemed almost amorous on her fair face—gave him an impression of immense perfidiousness.

From Sacrifice by Stephen French Whitman