Definition from Wiktionary, the free dictionary
- to judge too highly
- Experts overestimate the level of harm of cigarettes.
- (to judge too highly): underestimate
to judge too highly
overestimate (plural overestimates)
- An estimation that ends up being too high.
- I went with the higher bid because I would rather have it turn out to be an overestimate than having to scramble for more money when the bill comes due.