不足

bùzú
  1. insufficient
  2. lacking
  3. deficiency
  4. not enough
  5. inadequate
  6. not worth
  7. cannot
  8. should not

CEDICT

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 足 zú
  1. (bound form) foot; leg
  2. sufficient; ample
  3. as much as; fully