ac·com·plice /əˈkɑmpləs, ˈkʌm-/
  共犯,同謀
  Ac·com·plice n.
  1. A cooperator. [R.]
  Success unto our valiant general,
  And happiness to his accomplices!   --Shak.
  2. Law An associate in the commission of a crime; a participator in an offense, whether a principal or an accessory.   “And thou, the cursed accomplice of his treason.” --Johnson.
  Note: It is followed by with or of before a person and by in (or sometimes of) before the crime; as, A was an accomplice with B in the murder of C. Dryden uses it with to before a thing. “Suspected for accomplice to the fire.”
  Syn: -- Abettor; accessory; assistant; associate; confederate; coadjutor; ally; promoter. See Abettor.
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  accomplice
       n : a person who joins with another in carrying out some plan
           (especially an unethical or illegal plan) [syn: confederate]