rumple rumple /ˈrʌmpəl/

verb

1. Become wrinkled, crumpled or creased  ( crease , crinkle , crumple , rumple , wrinkle )
   become wrinkled, crumpled or creased
    This fabric won't wrinkle
   This fabric won't wrinkle
   
2. To gather something into small wrinkles or folds  ( cockle , crumple , knit , pucker , rumple )
   to gather something into small wrinkles or folds
    She puckered her lips
   She puckered her lips
   
3. Disturb the smoothness of  ( mess up , ruffle , ruffle up , rumple )
   disturb the smoothness of
    Ruffle the surface of the water
   ruffle the surface of the water