perfidious 

  1. 形容詞
背信棄義的
不忠實的, 不忠的
有異心的

    同義字詞
disloyal,faithless,false,fickle,inconstant,recreant,traitorous,treacherous,unfaithful,untrue

例句

  1. Where is the perfidious Army of Carlos?
  2. As unruly , perfidious , criminals and corrupt lots.
  3. It's not those perfidious Scots taking all our money.
  4. Perfidious was certainly the word for the way it operates.
  5. Compelled to parley, Bossu resorted to a perfidious stratagem.