Word of the Week: perfidy (ˈpər-fə-dē)
Definition
(Noun)
1: the quality or state of being faithless or disloyal: TREACHERY
2: an act or an instance of disloyalty
In Context
His descriptions of the perfidy of the British élite have the ring of an insider.
Sam Knight, “How Brexit Will End,” The New Yorker, Oct 30, 2019.