Learner's definition of OVERSTATE
to say that (something) is larger or greater than it really is
The company overstated revenue [=the company reported more revenue than it actually earned] for the past year.
It would be overstating the case to say that it was a matter of life or death.
It would be difficult to overstate the damage done by the storm. [=the storm did a great amount of damage]
The importance of tomorrow's test cannot be overstated. [=tomorrow's test is very important]