External and Inbuilt

External

External adjective - Not being a vital part of or belonging to something.

Inbuilt is an antonym for external.

Inbuilt

Inbuilt adjective - Existing as an essential constituent or characteristic.

External is an antonym for inbuilt in basic topic.
Cite this Source
Inbuilt and External. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/external/inbuilt
External & Inbuilt. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/external/inbuilt>.
Inbuilt or External. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/external/inbuilt.
Google Ngram Viewer shows how "external" and "inbuilt" have occurred on timeline