Sustention
Upkeep and sustention are semantically related. in perpetuation topic. In some cases you can use "Upkeep" instead a noun "Sustention".
Upkeep
Upkeep noun - The act or activity of keeping something in an existing and usually satisfactory condition.
Mutual synonyms
Cite this Source
Upkeep and Sustention. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/sustention/upkeep
Sustention & Upkeep. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/sustention/upkeep>.
Upkeep or Sustention. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/sustention/upkeep.
Google Ngram Viewer shows how "sustention" and "upkeep" have occurred on timeline