不可

bùkě
cannot; should not; must not

CEDICT

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 可 kě
  1. (prefix) can; may; able to; -able
  2. to approve; to permit
  3. to suit
  4. (particle used for emphasis) certainly; very
  5. but; however