(v): undergo a change; become different in essence; losing one's or its original nature
(v): collapse due to fatigue, an illness, or a sudden attack
(v): undergo (as of injuries and illnesses)
(v): fold or close up
(v): bend or lay so that one part covers the other
(v): fall apart
(v): change in physical make-up
(v): cause to burst
(v): suffer a nervous breakdown
(v): undergo (as of injuries and illnesses)
(v): lose significance, effectiveness, or value
(v): become weaker
(n): an abrupt failure of function or complete physical exhaustion
(n): impairment of normal physiological function affecting part or all of an organism
(n): a natural event caused by something suddenly falling down or caving in
(n): an event that happens
(n): the act of throwing yourself down
(n): the act of changing your location in a downward direction
(n): a sudden large decline of business or the prices of stocks (especially one that causes additional failures)
(n): an event that happens
