Rely upon
Rely upon verb - Put trust in with confidence.
Require
Require verb - To have as a requirement.
Mutual synonyms
Cite this Source
Require and Rely upon. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/rely_upon/require
Rely upon & Require. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/rely_upon/require>.
Require or Rely upon. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/rely_upon/require.
Google Ngram Viewer shows how "rely upon" and "require" have occurred on timeline