Long standing
Oldest and long standing are semantically related. In some cases you can use "Oldest" instead an adjective phrase "Long standing".
Oldest
Long standing and oldest are semantically related. Sometimes you can replace phrase "Long standing" with "Oldest", this terms are similar.
Cite this Source
Oldest and Long standing. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/long_standing/oldest
Long standing & Oldest. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/long_standing/oldest>.
Oldest or Long standing. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/long_standing/oldest.
Google Ngram Viewer shows how "long standing" and "oldest" have occurred on timeline