78 entries under adjective topic. ×

28
ancient(noun, feature, characteristic, start)
22
archaic(feature, characteristic, detail, new)
22
antiquated(feature, characteristic, detail, new)
21
old(feature, characteristic, detail, new)
19
antique(feature, characteristic, detail, new)
18
primitive(feature, characteristic, start, detail)
14
obsolete(last, original, old, venerable)
13
fossil(noun, ancient, oldness)
13
old-fashioned(original, old, venerable, antiquated)
13
prehistoric(ancient, before, oldness)
11
primordial(original, old, venerable, outdated)
10
primeval(original, old, venerable, outdated)
10
venerable(new, original, old, gray)
9
early(start, original, old, venerable)
9
hoary(new, ancient, prehistoric)
8
age-old(new, original, old, gray)
8
aged
8
extinct(dead, out, unfashionable, antiquated)
7
musty(stale, unfashionable, antiquated, aged)
6
dated(original, old, outdated, obsolete)
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APASmart Define. (2015). antediluvian thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/antediluvian/thesaurus/synonyms
ChicagoSmart Define. 2015. "antediluvian thesaurus" https://smartdefine.org/antediluvian/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, antediluvian thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/antediluvian/thesaurus/synonyms>.
MLASmart Define. "antediluvian thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/antediluvian/thesaurus/synonyms>