be not up to the mark

be not up to the mark

To be not as good as what was expected, required, or demanded; to be unsatisfactory. Jim, I know you've had a lot going on at home, but these reports just aren't up to the mark. I used to eat there all the time, but to be honest, their food hasn't been up to the mark recently.
See also: mark, not, up
Farlex Dictionary of Idioms.
See also:
  • you've got a lot of nerve
  • sweetener
  • leave a great deal to be desired
  • leave lots to be desired
  • leave much to be desired
  • leave a lot to be desired
  • leave a lot, much, etc. to be desired
  • much
  • what you've never had you never miss
  • leave something to be desired