無惡不作

无恶不作
wúèbùzuò
not to shrink from any crime (idiom); to commit any imaginable misdeed

CEDICT

Entry Composition

1 無 wú
  1. not to have
  2. no
  3. none
  4. not
  5. to lack
  6. un-
  7. -less
2 惡 è
  1. evil
  2. fierce
  3. vicious
  4. ugly
  5. coarse
  6. to harm
3 不 bù
  1. no; not so
  2. (bound form) not; un-
4 作 zuò
  1. to do; to engage in
  2. to write; to compose
  3. to pretend; to feign
  4. to regard as; to consider to be
  5. to be; to act the part of
  6. to feel (itchy, nauseous etc)
  7. writings; works