38 entries under adjective topic. ×

15
antique(noun, ancient)
9
antediluvian(ancient, oldness)
7
archaic(ancient, oldness)
7
antiquated
5
ancient(dead, tired, old, gray)
5
prehistoric(ancient, oldness)
4
fossilized
4
remains
3
obsolete
3
old(dead, age, venerable, antique)
2
adamant
2
elderly(tired, old, gray, mature)
2
old-fashioned
2
outdated
2
primeval
2
primordial
2
veteran(tired, gray, mature, aged)
1
Noachian
1
fusty
1
older(old, venerable, early, antique)
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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>