Crumple up
Flatten and crumple up are semantically related. In some cases you can use "Flatten" instead a verb "Crumple up".
Flatten
Flatten verb - To make free from breaks, curves, or bumps.
Crumple up and flatten are semantically related. Sometimes you can use "Crumple up" instead a verb "Flatten".
Mutual synonyms
Related pairs
Cite this Source
Flatten and Crumple up. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/crumple_up/flatten
Crumple up & Flatten. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/crumple_up/flatten>.
Flatten or Crumple up. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/crumple_up/flatten.
Google Ngram Viewer shows how "crumple up" and "flatten" have occurred on timeline