- (v.i.) To grow or become rough.
- (v.t.) To make rough.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). roughen. Retrieved September 23, 2026, from http://smartdefine.org/roughen/definitions/2056700 |
| Chicago | Webster's. 2011. "roughen" http://smartdefine.org/roughen/definitions/2056700 (accessed September 23, 2026). |
| Harvard | Webster's 2011, roughen, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/roughen/definitions/2056700>. |
| MLA | Webster's. "roughen" 28 May 2011. Web. 23 September 2026. <http://smartdefine.org/roughen/definitions/2056700> |