1
old-school(adjective, vogue)
1
old-timey
1
out-of-style(adjective, odd, old, primitive, unfashionable)
1
out of commission(expression, idiom)
1
out of gear(expression, idiom)
1
out of it(verb, expression, idiom, phrasal verb, odd)
1
out of print(expression, adjective, idiom)
1
overage
1
passed
1
past use
1
pensioned off
1
premature
1
primeval(original, old, venerable, antique, archaic)
1
primordial(original, old, venerable, antique, archaic)
1
pristine(adjective, last, original, previous, other)
1
ragged
1
reason
1
refused(adjective, disused)
1
relic(original, old, venerable, antique, archaic)
1
remote(original, old, venerable, antique, archaic)
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APASmart Define. (2016). obsolete thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/obsolete/thesaurus/synonyms
ChicagoSmart Define. 2016. "obsolete thesaurus" https://smartdefine.org/obsolete/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, obsolete thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/obsolete/thesaurus/synonyms>.
MLASmart Define. "obsolete thesaurus" 28 March 2016. Web. 23 September 2026. <https://smartdefine.org/obsolete/thesaurus/synonyms>