Agreed upon
Agreed upon adjective - Constituted or contracted by stipulation or agreement.
Unchallengeable and agreed upon are semantically related. In some cases you can use "Unchallengeable" instead an adjective phrase "Agreed upon".
Unchallengeable
Unchallengeable adjective - Not capable of being challenged or proved wrong.
Agreed upon and unchallengeable are semantically related. Sometimes you can use "Agreed upon" instead an adjective "Unchallengeable".
Nearby Word: unchallenged
Mutual synonyms
Cite this Source
Unchallengeable and Agreed upon. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/agreed_upon/unchallengeable
Agreed upon & Unchallengeable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/agreed_upon/unchallengeable>.
Unchallengeable or Agreed upon. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/agreed_upon/unchallengeable.
Google Ngram Viewer shows how "agreed upon" and "unchallengeable" have occurred on timeline