Basic
Basic adjective - Of or relating to the simplest facts or theories of a subject.
Supplementary
Supplementary adjective - Available to supply something extra when needed.
Usage example: the teacher's edition of the textbook comes with a lot of supplementary material
Basic is an antonym for supplementary.
Both words in one sentence
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Due to the aforementioned Space Marines all getting Standalone Codexes from eachother (where before they relied on a supplementary codex that required the basic Space Marine Codex to use), sometimes one Space Marine army did this to another.
Source: Spotlight-Stealing Squad
Cite this Source
Supplementary and Basic. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/basic/supplementary
Basic & Supplementary. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/basic/supplementary>.
Supplementary or Basic. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/basic/supplementary.
Google Ngram Viewer shows how "basic" and "supplementary" have occurred on timeline