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

After this they entered into some discourse of Melanthe, and whether it would be proper for Louisa to write her an account of this affair, and the count's perfidiousness.

From The Fortunate Foundlings Being the Genuine History of Colonel M——Rs, and His Sister, Madam Du P——Y, the Issue of the Hon. Ch——Es M——Rs, Son of the Late Duke of R—— L——D. Containing Many Wonderful Accidents That Befel Them in Their Travels, and Interspersed with the Characters and Adventures of Several Persons of Condition, In the Most Polite Courts of Europe. the Whole Calculated for the Entertainment and Improvement of the Youth of Both Sexes. by Eliza Fowler Haywood

The senora coquettishly bewailed, in rising and falling inflections, his long absence, his infidelity and general perfidiousness.

From From Sand Hill to Pine by Bret Harte

She once went so far as to say, that it was not superior discernment, which enabled her to suspect the perfidiousness of Walter.

From The Loyalists, Vol. 1-3 An Historical Novel by Jane West

The governor and people continued their wonted perfidiousness; the former being more careful in taking, and the latter in giving bribes, than in paying our debts.

From A General History and Collection of Voyages and Travels — Volume 09 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time by Robert Kerr