treach·er·ous /ˈtrɛʧərəs, ˈtrɛʧrəs/
 (a.)叛逆的,危險的,背叛的,不可靠的


 Treach·er·ous a.  Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless.
    Loyal father of a treacherous son.   --Shak.
    The treacherous smile, a mask for secret hate.   --Cowper.
 Syn: -- Faithless; perfidious; traitorous; false; insidious; plotting.
 -- Treach*er*ous*ly, adv. -- Treach*er*ous*ness, n.

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 treacherous
      adj 1: dangerously unstable and unpredictable; "treacherous winding
             roads"; "an unreliable trestle" [syn: unreliable]
      2: tending to betray; especially having a treacherous character
         as attributed to the Carthaginians by the Romans; "Punic
         faith"; "the perfidious Judas"; "the fiercest and most
         treacherous of foes"; "treacherous intrigues" [syn: punic,
          perfidious]