- (a.) Not dispensable; impossible to be omitted, remitted or spared; absolutely necessary or requisite.
- (a.) Unavoidable; inevitable.
- (a.) Not admitting dispensation; not subject to release or exemption.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). indispensable. Retrieved September 22, 2026, from http://smartdefine.org/indispensable/definitions/2020909 |
| Chicago | Webster's. 2011. "indispensable" http://smartdefine.org/indispensable/definitions/2020909 (accessed September 22, 2026). |
| Harvard | Webster's 2011, indispensable, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/indispensable/definitions/2020909>. |
| MLA | Webster's. "indispensable" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/indispensable/definitions/2020909> |