: to fall or shrink together abruptly and completely : fall into a jumbled or flattened mass through the force of external pressure
- a blood vessel that collapsed
: to break down completely : disintegrate
- … his case had collapsed in a mass of legal wreckage …
- —Erle Stanley Gardner
: to cave or fall in or give way
: to suddenly lose force, significance, effectiveness, or worth
- fears that the currency may collapse
: to break down in vital energy, stamina, or self-control through exhaustion or disease
: to fall helpless or unconscious
- She came home from work and collapsed on the sofa.
- He collapsed on stage during the performance.
: to fold down into a more compact shape
: to cause to collapse
- buildings collapsed by an earthquake
- collapse several stories into one