Middle English crumplenprobably frequentative ofcrumpento curl upcrumpet
American Heritage Dictionary of the English Language, 5th Edition
From Middle English crumpen (“to curl up, crump”),from Old English crump (“crooked”).
Crumple Sentence Examples
The Dutch-Belgian troops to the east of the Brussels highway were at once forced back by the mass of men moved against them, and it looked as if the whole defence would crumple up. But about 3 P.M.
Overlooking all smaller details, we may consider Asia to consist of a northern mass and a southern mass, too rigid to crumple, but not too strong to fracture, and an intermediate belt of softer rock which was capable of folding.
Crumple dry paper (newspaper is fine) and place it on the bottom of the fire pit.
Crumple up some paper and place it in the center of the fire pit.
Crumple it up and see if it bounces back without wrinkles.