plummet

1. V-I If an amount, rate, or price plummets, it decreases quickly by a large amount. (数量、比率、价格) 暴跌[journalism]

In Tokyo share prices have plummeted for the sixth successive day. 在东京，股价已经是连续第6天暴跌了。

The president's popularity has plummeted to an all-time low in recent weeks. 总统的声望最近几周已骤然跌至前所未有的低点。