3
has-been(adjective, vogue, the past)
3
hoary
3
irrecoverable
3
lapsed
3
old-hat(adjective, common, tired, odd, old)
3
old fashioned(expression, idiom)
3
olden(adjective, original, odd, old, traditional)
3
out of use(verb, expression, idiom, phrasal verb)
3
over
3
relinquished(adjective, disused)
3
retired
3
run out(verb, phrasal verb, oldness, the past)
3
superannuate(verb, new, used, obsolesce)
3
time
3
timeworn(adjective, vogue)
3
vanished
2
aged
2
antebellum
2
antiquate(verb, date)
2
blown over(verb, phrasal verb, the past)
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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>