Chief
Chief adjective - Coming before all others in importance.
Supplemental is an antonym for chief.
Nearby Word: chiefly
Supplemental
Supplemental adjective - Available to supply something extra when needed.
Usage example: the new program will provide supplemental health insurance to thousands of workers
Chief is an antonym for supplemental.
Both words in one sentence
- And then there's The Doctor, who gets promoted from "supplemental diagnostic tool" to Chief Medical Officer.
Source: Field Promotion
Cite this Source
Supplemental and Chief. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/chief/supplemental
Chief & Supplemental. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/chief/supplemental>.
Supplemental or Chief. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/chief/supplemental.
Google Ngram Viewer shows how "chief" and "supplemental" have occurred on timeline