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Related to perfidiousness: excogitate
References in periodicals archive ?
I do not want to spread false hopes, but because of Dimon's perfidiousness I think we have a fighting chance of delaying, and then blocking, the Bank One sale," Martin will state.
Chris Hedges would issue a stern warning: "Patriotism, often a thinly veiled form of collective self-worship, celebrates our goodness, our ideals, our mercy and bemoans the perfidiousness of those who hate us.
The schoolbooks in the Greek part of Cyprus, for example, have much to say about the heroism and fortitude of the Greeks and the perfidiousness of the Turks.