Eldest
Eldest adjective - First in order of birth.
Perpetual and eldest are semantically related. in traditional topic. In some cases you can use "Perpetual" instead an adjective "Eldest".
Mutual synonyms
Cite this Source
Perpetual and Eldest. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/eldest/perpetual
Eldest & Perpetual. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/eldest/perpetual>.
Perpetual or Eldest. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/eldest/perpetual.
Google Ngram Viewer shows how "eldest" and "perpetual" have occurred on timeline