Auxiliary and Inbuilt

Auxiliary

Auxiliary adjective - Available to supply something extra when needed.

Inbuilt is an antonym for auxiliary.

Inbuilt

Inbuilt adjective - Existing as an essential constituent or characteristic.

Auxiliary is an antonym for inbuilt in basic topic.
Cite this Source
Inbuilt and Auxiliary. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/auxiliary/inbuilt
Auxiliary & Inbuilt. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/auxiliary/inbuilt>.
Inbuilt or Auxiliary. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/auxiliary/inbuilt.
Google Ngram Viewer shows how "auxiliary" and "inbuilt" have occurred on timeline