Meaning of COLLAPSE in English
I . n.
Falling together, falling in ( as the sides of a flue ).
( Med. ) Prostration, exhaustion, sinking, extreme depression.
Break-down, downfall, utter failure, dead failure, abortion, brutum fulmen , "lame and impotent conclusion," flash in the pan.
II . v. n.
Fall together, fall in.
Break-down, come to nothing, fail utterly, go out in smoke, vanish in thin air.
Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012