perfidy

1. Betrayal of a trust (synset 104887159)
   is a type of: disloyalty - the quality of being disloyal
   subtypes: insidiousness - the quality of being designed to entrap
   same as: perfidiousness, treachery
2. An act of deliberate betrayal (synset 100751065)
   is a type of: dishonesty, knavery - lack of honesty; acts of lying or cheating or stealing
   subtypes:

   • double cross, double-crossing - an act of betrayal
   • sellout - a betrayal of one's principles principles, country, cause, etc.
   same as: betrayal, treachery, treason

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