(1)   The act of throwing yourself down
"He landed on the bed with a great flop"
(2)   A mishap caused by something suddenly falling down or caving in
(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 health


(5)   Collapse due to fatigue, an illness, or a sudden attack
(6)   Lose significance, effectiveness, or value
"The school system is collapsing"
"The stock market collapsed"
(7)   Suffer a nervous breakdown
(8)   Break down, literally or metaphorically
"The wall collapsed"
"The business collapsed"
"The dam broke"
"The roof collapsed"
"The wall gave in"
"The roof finally gave under the weight of the ice"
(9)   Cause to burst
"The ice broke the pipe"
(10)   Fall apart
"The building crumbled after the explosion"
"Negotiations broke down"
(11)   Fold or close up
"Fold up your umbrella"
"Collapse the music stand"


  1. To fall down suddenly; to cave in
  2. To cease to function due to a sudden breakdown
  3. To fold compactly
  4. For several batsmen to get out in quick succession
  5. To cause something to collapse.
    Hurry up and collapse the tent so we can get moving.


  1. The act of collapsing
  2. Constant function, one-valued function (in automata theory) (in particular application causing a reset)