Supplementary
Supplementary adjective - Available to supply something extra when needed.
Substantiating and supplementary are semantically related. In some cases you can use "Substantiating" instead an adjective "Supplementary".
Substantiating
Substantiating adjective - Serving to give support to the truth or factualness of something.
Usage example: without some substantiating evidence, such as a stub from a bus ticket, who's going to believe your alibi?
Supplementary and substantiating are semantically related. Sometimes you can use "Supplementary" instead an adjective "Substantiating".
Mutual synonyms
Cite this Source
Substantiating and Supplementary. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/supplementary/substantiating
Supplementary & Substantiating. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/supplementary/substantiating>.
Substantiating or Supplementary. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/supplementary/substantiating.
Google Ngram Viewer shows how "supplementary" and "substantiating" have occurred on timeline