And there was a crash involved—in Ukrainian perfidy and EU sanctions both.
Grace has been especially severe on the 12-person jury, which she has accused of all manner of perfidy.
The perfidy of the Illuminati with regard to the Freemasons is therefore apparent.
My shame I might bear; I might wash it out in blood at the battle's front; but my perfidy!
No, Sir; but, lawyer as I am, there are depths of perfidy I'm not prepared for.
His not having spoken of marriage may add to his perfidy, but can be no excuse for his conduct.
Stratagems must be carefully distinguished from perfidy, since the former are allowed, whereas the latter is prohibited.
And as the tale was unfolded of Odette Rider's perfidy, Sam's eyes narrowed.
It was considerable satisfaction to think that Sprudell had had to pay for his perfidy and she would benefit by it.
For many months Henry knew not, or refused to credit, his father-in-law's perfidy.
1590s, from Middle French perfidie (16c.), from Latin perfidia "faithlessness, falsehood, treachery," from perfidus "faithless," from phrase per fidem decipere "to deceive through trustingness," from per "through" (see per) + fidem (nominative fides) "faith" (see faith).
[C]ombinations of wickedness would overwhelm the world by the advantage which licentious principles afford, did not those who have long practiced perfidy grow faithless to each other. [Samuel Johnson, "Life of Waller"]