Antediluvian
Antediluvian adjective - Dating or surviving from the distant past.
Usage example: found evidence in the Middle East of an antediluvian people previously unknown to history
Dateless and antediluvian are semantically related. In some cases you can use "Dateless" instead an adjective "Antediluvian".
Dateless
Dateless adjective - Dating or surviving from the distant past.
Usage example: dateless artifacts left by an obscure people of the distant past
Antediluvian and dateless are semantically related. Sometimes you can use "Antediluvian" instead an adjective "Dateless".
Cite this Source
Dateless and Antediluvian. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/antediluvian/dateless
Antediluvian & Dateless. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/antediluvian/dateless>.
Dateless or Antediluvian. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/antediluvian/dateless.
Google Ngram Viewer shows how "antediluvian" and "dateless" have occurred on timeline