overestimation
/ˌoʊvərˌɛstɪˈmeɪʃən/
noun
- The act of judging something to be larger, more important, or more valuable than it really is.
- The company's overestimation of demand caused a huge surplus of products.
- An overestimation of the distance made them run out of water before reaching the camp.
- His overestimation of his own abilities led to a failed project.
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