All the business with agents and publicists and managers, that can be extremely frustrating and ultimately a waste of time.
Times, Sunday Times
As a result, it can be extremely frustrating.
The Sun
Make too many mistakes and you have to start the whole scene again, which can be extremely frustrating.
Times, Sunday Times
We dominated and to find ourselves two goals down was extremely frustrating.
The Sun
Failures can be extremely frustrating.
Times, Sunday Times