16
obsolete(adjective, odd, old, primitive, unfashionable)
15
antiquated(adjective, odd, old, primitive, unfashionable)
12
antique(adjective, odd, old, primitive, unfashionable)
12
old-fashioned(adjective, old, traditional, unfashionable, obsolete)
11
archaic(adjective, odd, old, primitive, unfashionable)
11
dated(adjective, odd, old, primitive, unfashionable)
11
superannuated(adjective, odd, old, primitive, unfashionable)
8
ancient(adjective, odd, old, primitive, unfashionable)
8
old(adjective, odd, primitive, unfashionable, outdated)
8
outmoded(adjective, odd, old, primitive, unfashionable)
6
out of date(expression, adjective, idiom, outworn)
6
outdated(adjective, odd, old, primitive, unfashionable)
5
old-time(adjective, odd, old, bent, primitive)
5
passe(adjective, odd, old, primitive, unfashionable)
4
dead(adjective, odd, old, primitive, unfashionable)
4
old hat
4
out(adjective, odd, old, primitive, unfashionable)
3
antediluvian(adjective, old, unfashionable, obsolete, antiquated)
3
disused
3
musty(adjective, odd, old, primitive, unfashionable)
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APASmart Define. (2015). obsolescent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/obsolescent/thesaurus/synonyms
ChicagoSmart Define. 2015. "obsolescent thesaurus" https://smartdefine.org/obsolescent/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, obsolescent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/obsolescent/thesaurus/synonyms>.
MLASmart Define. "obsolescent thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/obsolescent/thesaurus/synonyms>