- 1a judgment that you make without having the exact details or figures about the size, amount, cost, etc. of something I can give you a rough estimate of the amount of wood you will need. a ballpark estimate (= an approximate estimate) official government estimates of traffic growth over the next decade At least 5,000 people were killed, and that's a conservative estimate (= the real figure will be higher).
- 2 a statement of how much a piece of work will probably cost We got estimates from three businesses and accepted the lowest.
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