to press or crush into irregular folds or into a compact mass; bend out of shape; rumple; wrinkle.

to cause to collapse or give way suddenly

That right hook to the midsection crumpled him.

to contract into wrinkles; shrink; shrivel.

to give way suddenly; collapse

The bridge crumpled under the weight of the heavy trucks.

an irregular fold or wrinkle produced by crumpling.

verb

straighten

verb

break down , buckle , cave in , collapse , crease , crimp , crimple , crinkle , crush , fall , fold , give way , go to pieces , pucker , rimple , ruck , rumple , screw , scrunch , shrivel , wad , wrinkle , give , go , break , cave , corrugate , crush together

noun

crease , crimp , crinkle , pleat , plica , plication , pucker , rimple , ruck , rumple , wrinkle