(n.) The quality of state of being proficient; advance in the acquisition of any art, science or knowledge; progression in knowledge; improvement; adeptness; as, to acquire proficiency in music.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). proficiency. Retrieved September 22, 2026, from http://smartdefine.org/proficiency/definitions/2049593 |
| Chicago | Webster's. 2011. "proficiency" http://smartdefine.org/proficiency/definitions/2049593 (accessed September 22, 2026). |
| Harvard | Webster's 2011, proficiency, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/proficiency/definitions/2049593>. |
| MLA | Webster's. "proficiency" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/proficiency/definitions/2049593> |