Hypogean
Sunken and hypogean are semantically related. in underground topic. In some cases you can use "Sunken" instead an adjective "Hypogean".
Sunken
Sunken adjective - Curved inward.
Mutual synonyms
Cite this Source
Sunken and Hypogean. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/hypogean/sunken
Hypogean & Sunken. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/hypogean/sunken>.
Sunken or Hypogean. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/hypogean/sunken.
Google Ngram Viewer shows how "hypogean" and "sunken" have occurred on timeline