collapse - noun

an abrupt failure of function or complete physical exhaustion

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

the act of throwing yourself down

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

collapse - verb

• break down, literally or metaphorically
• collapse due to fatigue, an illness, or a sudden attack
• fold or close up
• fall apart
• cause to burst
• suffer a nervous breakdown
• lose significance, effectiveness, or value

collapse - thesaurus

break   burst   crack   crash   crumble   crumple   flop   founder   give   prostration   tumble