crumble

(v) fall apart
- the building crumbled after the explosion
- Negotiations broke down
crumple, collapse, break down, tumble,
(v) break or fall apart into fragments
- The cookies crumbled
- The Sphinx is crumbling
fall apart,
(v) fall into decay or ruin
- The unoccupied house started to decay
decay, dilapidate,

crumple collapse break down tumble fall apart decay dilapidate

crumbly