(n.) Substance or quality of temperament; spirit, especially as regards honor, courage, fortitude, ardor, etc.; disposition; -- usually in a good sense.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). mettle. Retrieved September 21, 2026, from http://smartdefine.org/mettle/definitions/2032450 |
| Chicago | Webster's. 2011. "mettle" http://smartdefine.org/mettle/definitions/2032450 (accessed September 21, 2026). |
| Harvard | Webster's 2011, mettle, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/mettle/definitions/2032450>. |
| MLA | Webster's. "mettle" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/mettle/definitions/2032450> |