7 entries under ancient topic. ×

15
antique(noun, adjective)
9
antediluvian(adjective, oldness)
7
archaic(adjective, oldness)
5
prehistoric(adjective, oldness)
4
hoary(tired, old, gray, mature, venerable)
4
venerable(tired, old, gray, mature, early)
1
bygone
11 years ago|6k views|share |citing 
APASmart Define. (2015). fossil thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fossil/thesaurus/synonyms
ChicagoSmart Define. 2015. "fossil thesaurus" https://smartdefine.org/fossil/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, fossil thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fossil/thesaurus/synonyms>.
MLASmart Define. "fossil thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/fossil/thesaurus/synonyms>