collapse

suffer a nervous breakdown

fold or close up

“collapse the music stand”

lose significance, effectiveness, or value

“The stock market collapsed”

the act of throwing yourself down

break down, literally or metaphorically

“The wall collapsed”

an abrupt failure of function or complete physical exhaustion

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

cause to burst

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

fall apart

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

“the roof is in danger of collapse”