(adv.) In vain.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). frustrately. Retrieved September 21, 2026, from http://smartdefine.org/frustrately/definitions/2010495 |
| Chicago | Webster's. 2011. "frustrately" http://smartdefine.org/frustrately/definitions/2010495 (accessed September 21, 2026). |
| Harvard | Webster's 2011, frustrately, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/frustrately/definitions/2010495>. |
| MLA | Webster's. "frustrately" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/frustrately/definitions/2010495> |