deputy
noun
°One appointed as the substitute of another, and empowered to act for him, in his name or his behalf; a substitute in office; a lieutenant; a representative; a delegate; a vicegerent; as, the deputy of a prince, of a sheriff, of a township, etc.
°(in France): A member of the Chamber of Deputies, formerly called Corps Législatif.
synonyms: substitute, representative, legate, delegate more» , envoy, agent