1. Having a curve or bend in, esp. not in original shape
   "a car with a crumpled front end";
   - bent, dented

1. Fall apart
   "the building crumpled after the explosion";
   - crumble, tumble, break down, collapse
    
2. Fold or collapse
   "His knees crumpled";
   - buckle
    
3. To gather something into small wrinkles or folds
   "The humidity made the pages crumple";
   - pucker, rumple, cockle, knit
    
4. Become wrinkled, crumpled or creased
   "This fabric won't crumple";
   - rumple, wrinkle, crease, crinkle
    
5. Squeeze or crush a flat material to make a compact rough ball or fit in a container
   "he crumpled up the letter and threw it";
   - scrunch, scrunch up, crumple up

See also: damaged

Type of: break, cave in, change integrity, collapse, fall in, fold, fold up, founder, give, give way

Encyclopedia: Crumpled