noun (plural -dies) see: per- Date: 1592 the quality or state of being faithless or disloyal ; treachery , an act or an instance of disloyalty
PERFIDY
Meaning of PERFIDY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012