I. ˈkrəm-pəl verb
( crum·pled ; crum·pling -p(ə-)liŋ)
Etymology: Middle English crumplen, frequentative of Middle English crumpen
Date: 14th century
transitive verb
1. : to press, bend, or crush out of shape : rumple
2. : to cause to collapse
intransitive verb
1. : to become crumpled
2. : collapse
II. noun
Date: 15th century
: a wrinkle or crease made by crumpling
• crum·ply ˈkrəm-p(ə-)lē adjective