1. crumple - Noun
2. crumple - Verb
To draw or press into wrinkles or folds; to crush together; to rumple; as, to crumple paper.
To contract irregularly; to show wrinkles after being crushed together; as, leaves crumple.
Source: Webster's dictionarythe building crumbled after the explosion Source: Internet
Negotiations broke down Source: Internet
His knees buckled Source: Internet
She puckered her lips Source: Internet
This fabric won't wrinkle Source: Internet
Brouwer is said to have added: "I can formulate this splendid result different, I take a horizontal sheet, and another identical one which I crumple, flatten and place on the other. Source: Internet