noun, plural per·fi·dies.
Origin of perfidy
Examples from the Web for perfidy
And there was a crash involved—in Ukrainian perfidy and EU sanctions both.Up To a Point: Binge Watching Putin's Propaganda Network|P. J. O’Rourke|September 20, 2014|DAILY BEAST
Grace has been especially severe on the 12-person jury, which she has accused of all manner of perfidy.
The hunter struck the woman dead when he learned of her perfidy.Myths And Legends Of Our Own Land, Complete|Charles M. Skinner
The object of this perfidy yet escaped him; and reason and good sense could form no idea of the motive.
She thought for a long time over the possible innocence or perfidy of this man.The Works of Guy de Maupassant, Vol. 6|Guy de Maupassant
Natural difficulties you might have overcome, but you have been outmatched by perfidy and human weakness.The Field of Ice|Jules Verne
It is a fine line that divides a stratagem from an act of perfidy.Military Manners and Customs|James Anson Farrer