- (v.t.) To animate; to encourage; to fix in resolution.
- (v.t.) To make strong or stronger; to add strength to; as, to strengthen a limb, a bridge, an army; to strengthen an obligation; to strengthen authority.
- (v.i.) To grow strong or stronger.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). strengthen. Retrieved September 25, 2026, from http://smartdefine.org/strengthen/definitions/2067050 |
| Chicago | Webster's. 2011. "strengthen" http://smartdefine.org/strengthen/definitions/2067050 (accessed September 25, 2026). |
| Harvard | Webster's 2011, strengthen, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/strengthen/definitions/2067050>. |
| MLA | Webster's. "strengthen" 28 May 2011. Web. 25 September 2026. <http://smartdefine.org/strengthen/definitions/2067050> |