accomplice

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a person who joins with another in carrying out some plan (especially an unethical or illegal plan) (Freq. 1)
• Syn:
confederate
• Derivationally related forms:
confederate (for: confederate)
• Hypernyms:
assistant, helper, help, supporter
• Hyponyms:
decoy, steerer