accomplice
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." Dryden. Syn. -- Abettor; accessory; assistant; associate; confederate; coadjutor; ally; promoter. See Abettor.
Source: Webster's Revised Unabridged Dictionary (1913), United States public domain. See methodology for full licensing detail. Word validity for game play may differ from any official game dictionary.