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treacherous adjective

  /ˈtɹɛt͡ʃəɹəs/ , /ˈtɹɛt͡ʃɹəs/
  • Exhibiting treachery.
 infido, sleale, traditore

treacherously adverb

  • In a treacherous manner.
 proditoriamente, subdolamente
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