Centuries old
Fixed and centuries old are semantically related. In some cases you can use "Fixed" instead an adjective phrase "Centuries old".
Fixed
Fixed adjective - Having been established and usually not subject to change.
Centuries old and fixed are semantically related. Sometimes you can use "Centuries old" instead an adjective "Fixed".
Mutual synonyms
Cite this Source
Fixed and Centuries old. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/centuries_old/fixed
Centuries old & Fixed. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/centuries_old/fixed>.
Fixed or Centuries old. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/centuries_old/fixed.
Google Ngram Viewer shows how "centuries old" and "fixed" have occurred on timeline