32 entries under oldness topic. ×
| antediluvian(adjective, ancient) | |
| archaic(adjective, ancient) | |
| prehistoric(adjective, ancient) | |
| antemundane | |
| classic | |
| primeval | |
| primordial | |
| aboriginal | |
| ancestral | |
| antebellum | |
| colonial | |
| preglacial | |
| primitive | |
| beginning | |
| black-letter | |
| diluvian | |
| medieval | |
| paleoanthropic | |
| paleoanthropological | |
| paleocrystic |
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| APA | Smart Define. (2015). fossil thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fossil/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fossil thesaurus" https://smartdefine.org/fossil/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, fossil thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fossil/thesaurus/synonyms>. |
| MLA | Smart Define. "fossil thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/fossil/thesaurus/synonyms> |