Arch
Arch adjective - Coming before all others in importance.
Usage example: since the start of her acting career her parents have steadfastly remained her arch supporters
Subsidiary is an antonym for arch.
Subsidiary
Subsidiary adjective - Functioning in a supporting capacity.
Arch is an antonym for subsidiary.
Nearby Word: subsidiarity
How words are described
Cite this Source
Subsidiary and Arch. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/arch/subsidiary
Arch & Subsidiary. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/arch/subsidiary>.
Subsidiary or Arch. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/arch/subsidiary.
Google Ngram Viewer shows how "arch" and "subsidiary" have occurred on timeline