A case against him would have been a waste of the court's time.

So to keep you here any longer would be a waste of time.

To do so would be a waste of time and resources.

For many people university is a waste of time and money.

In which case following him around is a waste of time.

Where we can get to you without any waste of time.

So thinking about him is just a waste of time.

Any further effort to do so would be a waste of time and energy.

Everything I learned after 11 was a waste of time.

But he knew the wait was a waste of time.