no obj.
1
- with adverbial sit, lean, or fall heavily and limply（沉重无力地）坐下（或倚下、倒下）：
she slumped against the cushions
她无力地靠在软垫上
(be slumped) Denis was slumped in his seat.
丹尼斯无精打采地瘫在椅子上。
2
- undergo a sudden severe or prolonged fall in price, value, or amount（价格、价值或数量的）猛然严重下跌, 长期下跌：
land prices slumped.
地价大幅走低。
2.1
- fail or decline substantially惨败; 猛跌：
United slumped to another one-nil defeat.
联队成绩下滑, 又以0比1惨败。
1
- a sudden severe or prolonged fall in the price, value, or amount of something（价格、价值或数量的）猛然严重下跌, 长期下跌：
a slump in annual profits.
年利润下降。
1.1
- a prolonged period of abnormally low economic activity, typically bringing widespread unemployment经济不景气时期（多伴有大规模失业）。
1.2
- a period of substantial failure or decline低潮期, 下降期：
Arsenal's recent slump.
阿森纳队最近的低潮期。
派生词
slumpy
adjective词源
late 17th cent. （in the sense 'fall into a bog'）： probably imitative and related to Norwegian slumpe 'to fall'.