noun / verb
slump
SLUHMP/slˈʌmp/
A heavy downward collapse.
The chart shows a sudden slump after a long stable period.

Etymology
The verb probably comes from a Scandinavian source such as Norwegian slumpe, “fall upon.” Its early image of suddenly sinking into mud became figurative failure and then a sharp decline in prices or business.
In context
the European economy showed weak signs of recovery, then fell back to a slump.
More examples
- The team is trying to break out of a slump.
- Sales slump when the tourist season ends.
- He sits in a weary slump at his desk.
Forms
slump · slumps · slumped · slumping