betrayal - definition and synonyms

noun [countable/uncountable] 

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/bɪˈtreɪəl/
singularbetrayal
pluralbetrayals
  1. 1
    an act of betraying someone or something
    betrayal of:

    a betrayal of long-held principles

  2. 2
    the fact of being betrayed

    It was hard to avoid a sense of betrayal.