Main entry: rumple, crumple, crease, crinkle, wrinkle
Definition: become wrinkled or crumpled or creased
Usage: This fabric won't wrinkle
Main entry: rumple, crumple, pucker, cockle, knit
Definition: to gather something into small wrinkles or folds
Usage: She puckered her lips
Definition: fold or collapse
Usage: His knees buckled
Main entry: collapse, break down, crumble, crumple, tumble
Definition: fall apart
Usage: the building crumbled after the explosion; Negotiations broke down