Focus on the pronunciation of overestimate
English definition of “overestimate”
› [I or T] to think that something is or will be greater or more important than it really is: grossly/wildly overestimate I think we have grossly overestimated the pace of growth. Most people overestimate what they can achieve in a day and underestimate what they can achieve in a year. Assess your potential earnings honestly - don't overestimate.
› [T] to think that someone is better at doing something, more intelligent, etc. than they really are: I thought they would pick it up very quickly, but I overestimated them. overestimation noun [C or U] › Part of the problem was gross overestimation of ticket sales.