为虎作伥 wèi hǔ zuò chāng

DEFINITIONS

  1. to act as accomplice to the tiger
  2. to help a villain do evil (idiom)

CHARACTERS

为 wèi do, handle, govern, act; be
虎 hǔ tiger; brave, fierce; surname
作 zuò make; work; compose, write; act, perform
伥 chāng ghost of one devoured by tiger