50 entries under outdated topic. ×

21
old(adjective, feature, characteristic, detail, new)
19
antique(adjective, feature, characteristic, detail, new)
18
primitive(adjective, feature, characteristic, start, detail)
14
obsolete(adjective, last, original, old, venerable)
11
primordial(adjective, original, old, venerable)
10
primeval(adjective, original, old, venerable)
7
bygone(original, dead, old, venerable)
6
dated(adjective, original, old, obsolete)
6
outmoded(adjective, original, old, venerable)
6
superannuated(adjective, original, dead, old)
5
aboriginal(adjective, last, original, past, primitive)
5
old-time(adjective, new, last, original, primitive)
5
olden(adjective, new, original, old, primitive)
4
former(last, original, past, primitive, venerable)
4
stale(adjective, original, old, obsolete)
4
traditional(feature, characteristic, detail, last, original)
3
immemorial(last, original, past, primitive, venerable)
3
original(adjective, last, past, primitive, primary)
3
past(last, original, primitive, venerable, unfashionable)
3
relic(last, original, old, venerable)
<123>
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APASmart Define. (2015). antediluvian thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/antediluvian/thesaurus/synonyms
ChicagoSmart Define. 2015. "antediluvian thesaurus" https://smartdefine.org/antediluvian/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, antediluvian thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/antediluvian/thesaurus/synonyms>.
MLASmart Define. "antediluvian thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/antediluvian/thesaurus/synonyms>