Synonyms for Crumple (same or very similar meaning)
WordNet sense 1 (fall apart):
collapse, crumble, tumble, break downWordNet sense 2 (fold or collapse):
buckleWordNet sense 3 (to gather something into small wrinkles or folds):
cockle, knit, pucker, rumpleWordNet sense 4 (become wrinkled or crumpled or creased):
crease, crinkle, wrinkleFrom the ODE community, based on WordNetadd/edit