Longstanding
Longstanding adjective - Having existed for a long time.
Proemial and longstanding are semantically related. In some cases you can use "Proemial" instead an adjective "Longstanding".
Proemial
Longstanding and proemial are semantically related. Sometimes you can use "Longstanding" instead an adjective "Proemial".
Mutual synonyms
Cite this Source
Proemial and Longstanding. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/longstanding/proemial
Longstanding & Proemial. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/longstanding/proemial>.
Proemial or Longstanding. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/longstanding/proemial.
Google Ngram Viewer shows how "longstanding" and "proemial" have occurred on timeline