collapse

the act of throwing yourself down

a natural event caused by something suddenly falling down or caving in

a sudden large decline of business or the prices of stocks (especially one that causes additional failures)

an abrupt failure of function or complete physical exhaustion

to collapse due to fatigue, an illness, or a sudden attack

to lose significance, effectiveness, or value

to suffer a nervous breakdown

to break down, literally or metaphorically

to cause to burst

to fall apart

to fold or close up