slump

slump verb uk/slʌmp/ us
[ I ] If a price, value, or amount slump s, it goes down suddenly.

внезапно или резко падать
Sales have slump ed by 50%.  slump back/down/over, etc
to fall or sit down suddenly because you feel tired or weak

тяжело опускаться, падать
She slump ed back in her chair, exhausted.

SLUMP noun

[ C ] uk/slʌmp/ us slump noun [C]
(ECONOMY)

a period when there is very little business activity and not many jobs

экономический спад
It's been the worst economic slump for 25 years.