collapse

noun

1
the act of throwing yourself down
he landed on the bed with a great flop
2
a natural event caused by something suddenly falling down or caving in
the roof is in danger of collapse
the collapse of the old star under its own gravity
3
a sudden large decline of business or the prices of stocks (especially one that causes additional failures)
4
an abrupt failure of function or complete physical exhaustion
the commander's prostration demoralized his men

1
collapse due to fatigue, an illness, or a sudden attack
2
lose significance, effectiveness, or value
The school system is collapsing
The stock market collapsed
3
suffer a nervous breakdown
4
break down, literally or metaphorically
The wall collapsed
The business collapsed
5
cause to burst
The ice broke the pipe
6
fall apart
the building crumbled after the explosion
Negotiations broke down
7
fold or close up
fold up your umbrella
collapse the music stand

Also useful for “collapse”:Unscrambler— Rearrange the letters in “collapse”