1
out-of-date(adjective, last, original, dead, remote)
1
outmoded(last, original, past, other, obsolete)
1
over(adjective, late, old, past, previous)
1
prehistoric
1
primordial(last, original, past, primitive, venerable)
1
relic(last, original, past, primitive, venerable)
1
remote(last, original, past, primitive, venerable)
1
retired(adjective, late, old, past, previous)
1
rusty(last, original, past, primitive, venerable)
1
stale(last, original, past, venerable, outdated)
1
superannuated(original, past, venerable, outdated, obsolete)
1
then
1
time-worn(last, original, past, primitive, venerable)
1
traditional(last, original, past, primitive, venerable)
1
unfashionable(last, original, past, primitive, venerable)
1
unoriginal(last, original, past, venerable, outdated)
1
vanished(adjective, dead, past, lost, previous)
1
venerable(original, past, primitive, outdated, obsolete)
1
water over the dam(expression, adjective, idiom, dead, past)
1
water under the bridge(expression, adjective, idiom, dead, past)
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APASmart Define. (2015). quondam thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/quondam/thesaurus/synonyms
ChicagoSmart Define. 2015. "quondam thesaurus" https://smartdefine.org/quondam/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, quondam thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/quondam/thesaurus/synonyms>.
MLASmart Define. "quondam thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/quondam/thesaurus/synonyms>