Keystone
Keystone noun - An immaterial thing upon which something else rests.
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Synonyms for Keystone
Root principle and keystone are semantically related. In some cases you can use "Root principle" instead a noun "Keystone".
Root principle
Keystone and root principle are semantically related. You can use "Keystone" instead a noun phrase "Root principle".
Mutual synonyms
Cite this Source
Root principle and Keystone. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/keystone/root_principle
Keystone & Root principle. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/keystone/root_principle>.
Root principle or Keystone. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/keystone/root_principle.
Google Ngram Viewer shows how "keystone" and "root principle" have occurred on timeline