Magoosh GRE Vocabulary Practice Test

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Perfidy refers to which act?
Correct Answer:
Betrayal
Explanation:
Perfidy is all about betraying trust. It names a deliberate act of treachery—being faithless or breaking an oath or promise in a way that harms others. That makes it a precise fit for betrayal, since betrayal is the act of turning against someone who trusted you. So this word points to betrayal rather than loyalty or courage, and while dishonor can accompany treachery, perfidy zeroes in on the faithless, treacherous act itself. A sentence might be: “The spy’s perfidy lay in betraying his country to the enemy.”

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