rumple

动词 rumple:

1. disturb the smoothness of
   同义词：ruffle, ruffle up, mess up
2. to gather something into small wrinkles or folds
   同义词：pucker, cockle, crumple, knit
3. become wrinkled or crumpled or creased
   同义词：crumple, wrinkle, crease, crinkle

rum.ple

v.（动词）
rum.pled,rum.pling,rum.ples
v.tr.（及物动词）
To wrinkle or form into folds or creases.
弄皱、压皱或弃乱：弄皱，或使有褶皱
v.intr.（不及物动词）
To become wrinkled or creased.
变皱，变凌乱
n.（名词）
An irregular or untidy crease.
褶纹，皱褶：不规则或不整齐的皱痕

来源：
Perhaps Dutch rompelen
可能为 荷兰语 rompelen
from Middle Dutch rumpelen
源自 中古荷兰语 rumpelen

【引伸】
rum.ply
adj.（形容词）