Indispensable and Supplemental

Indispensable

Indispensable adjective - Impossible to do without.

Supplemental is an antonym for indispensable.

Nearby Word: indispensably

Supplemental

Supplemental adjective - Available to supply something extra when needed.
Usage example: the new program will provide supplemental health insurance to thousands of workers

Indispensable is an antonym for supplemental.

Cite this Source
Supplemental and Indispensable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/indispensable/supplemental
Indispensable & Supplemental. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/indispensable/supplemental>.
Supplemental or Indispensable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/indispensable/supplemental.
Google Ngram Viewer shows how "indispensable" and "supplemental" have occurred on timeline