overestimate
verb [ I or T ] uk/ˌəʊ.vəˈres.tɪ.meɪt/ us/ˌoʊ.vɚˈes.tə.meɪt/
C1 过高估计;过高评价
to think that something is or will be greater, more extreme, or more important than it really is
The benefits of nuclear technology, she said, had been grossly overestimated. 她说，核技术的好处被大大高估了。
They were forced to the conclusion that they had overestimated him/his abilities. 他们不得不得出结论：他们高估了他／他的能力。
I overestimated and there was a lot of food left over after the party. 我估计过头，结果聚会后剩了好多吃的。