Flatten
Flatten verb - To make free from breaks, curves, or bumps.
Usage example: flattened out the wrinkled paper before attempting to trace the pattern
Smooth is a synonym for flatten in action topic. In some cases you can use "Smooth" instead a verb "Flatten", when it comes to topics like become flatter, become flat, level out. popular alternative
Smooth
Smooth verb - To make free from breaks, curves, or bumps.
Usage example: the workers smoothed the surface of the concrete before letting it dry
Flatten is a synonym for smooth in action topic. You can use "Flatten" instead a verb "Smooth", if it concerns topics such as become flatter, make level. popular alternative
Common collocations
| men | flatten men | smooth men |
Cite this Source
Smooth and Flatten. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/flatten/smooth
Flatten & Smooth. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/flatten/smooth>.
Smooth or Flatten. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/flatten/smooth.
Google Ngram Viewer shows how "flatten" and "smooth" have occurred on timeline