(adv.) Till then or now; heretofore; formerly.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). erstwhile. Retrieved September 20, 2026, from http://smartdefine.org/erstwhile/definitions/2004640 |
| Chicago | Webster's. 2011. "erstwhile" http://smartdefine.org/erstwhile/definitions/2004640 (accessed September 20, 2026). |
| Harvard | Webster's 2011, erstwhile, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/erstwhile/definitions/2004640>. |
| MLA | Webster's. "erstwhile" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/erstwhile/definitions/2004640> |