Needed
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
Needed is an antonym for supplementary.
Both words in one sentence
- Magical Girl Lyrical Nanoha A's: Normally soft-spoken Yuuno found himself doing this in the last chapter◊ supplementary comics when he learned that the small task Signum needed him for was in setting up a Training Barrier for her Lighthearted Rematch with Fate. Again.
Source: Face Palm / Anime and Manga - According to supplementary material, the reason that Asuka returned to the real world alongside Shinji at the end of End of Evangelion was because he needed her above all, even if they had hurt each other.
Source: Hates Being Alone
Cite this Source
Supplementary and Needed. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/needed/supplementary
Needed & Supplementary. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/needed/supplementary>.
Supplementary or Needed. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/needed/supplementary.
Google Ngram Viewer shows how "needed" and "supplementary" have occurred on timeline