/ˌəʊvərˈestɪmət; NAmEˌoʊ-/ [, ]an estimate about the size, cost, etc. of sth that is too high高估◆Our projection of 200 000 sales turned out to be a massive overestimate.我们 20 万的预期销售量证明被大幅高估了。OPPunderestimate ▸overestimation /ˌəʊvərestɪˈməɪʃn; NAmEˌoʊ-/