/ˌəʊvərˈestɪmət; NAmE ˌoʊ-/ [countable, usually singular] 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。 OPP underestimate ▸ overestimation /ˌəʊvərestɪˈməɪʃn; NAmE ˌoʊ-/

noun