downslide

down.slide

n.（名词）
A downward course; a decline:
下跌；下降：
例句：
.a growing concern among . . . board leaders about whether the economy could be headed for a downslide.(Andrée Brooks)
.董事长们越来越关注的问题，即经济是否有下跌趋势.(安德里·布鲁克斯)