· fall apart; "the building crumbled after the explosion"; "Negotiations broke down"

Synonym(s): crumble, tumble, break_down, collapse

Hypernym(s): change_integrity

· fold or collapse; "His knees buckled"

Synonym(s): buckle

Hypernym(s): collapse, fall_in, cave_in, give, give_way, break, founder

· to gather something into small wrinkles or folds; "She puckered her lips"

Synonym(s): pucker, rumple, cockle, knit

Hypernym(s): wrinkle, ruckle, crease, crinkle, scrunch, scrunch_up, crisp

· become wrinkled or crumpled or creased; "This fabric won't wrinkle"

Synonym(s): rumple, wrinkle, crease, crinkle

Hypernym(s): fold, fold_up

· of metal e.g.; "bent nails"; "a car with a crumpled front end"; "dented fenders"

Synonym(s): bent, dented