Ancillary
Ancillary adjective - Furnishing added support.
Back up
Back up verb - Move backwards from a certain position.
Mutual synonyms
Cite this Source
Back up and Ancillary. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/ancillary/back_up
Ancillary & Back up. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/ancillary/back_up>.
Back up or Ancillary. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/ancillary/back_up.
Google Ngram Viewer shows how "ancillary" and "back up" have occurred on timeline