67
old(adjective, feature, characteristic, trait, common)
65
old-fashioned(adjective, feature, characteristic, trait, square)
59
archaic(adjective, feature, characteristic, trait, last)
58
outdated(adjective, feature, characteristic, trait, common)
56
antiquated(adjective, feature, characteristic, trait, common)
55
dated(adjective, feature, characteristic, trait, last)
53
extinct(adjective, feature, characteristic, trait, dead)
53
outmoded(adjective, feature, characteristic, trait, common)
51
antique(adjective, feature, characteristic, trait, last)
48
passé(adjective, feature, characteristic, bad, cool)
43
superannuated(adjective, feature, characteristic, trait, original)
42
out-of-date(adjective, feature, characteristic, trait, common)
38
demode(adjective, feature, characteristic, trait, last)
26
ancient(adjective, odd, old, traditional, primitive)
17
disused(adjective, vogue, disused)
15
obsolescent(adjective, odd, old, primitive, unfashionable)
14
out of date(expression, adjective, idiom, oldness)
14
antediluvian(adjective, last, original, old, venerable)
12
dead(adjective, odd, old, over, working)
12
old hat(expression, adjective, idiom)
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APASmart Define. (2016). obsolete thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/obsolete/thesaurus/synonyms
ChicagoSmart Define. 2016. "obsolete thesaurus" https://smartdefine.org/obsolete/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, obsolete thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/obsolete/thesaurus/synonyms>.
MLASmart Define. "obsolete thesaurus" 28 March 2016. Web. 22 September 2026. <https://smartdefine.org/obsolete/thesaurus/synonyms>