So naturally you'll be suspicious of sudden changes, especially when you're told they'll be of substantial benefit.

It said any rise in inflation and interest rates could result in a substantial benefit for value investors.

They are a substantial benefit because they reduce bending and squatting.

Proponents of an information rich visitor management system point to increased school security as one substantial benefit.

The donor's allowable deduction will be reduced, however, by the amount of the substantial benefit conferred upon them as a result of their contribution.