1
oldfangled(last, original, past, primitive, venerable)
1
oral
1
original(last, past, traditional, primitive, venerable)
1
out-of-date(last, original, past, other, obsolete)
1
outdated(last, original, previous, venerable, other)
1
outmoded(last, original, past, other, outdated)
1
perennial(lasting, permanent, everlasting, unending, undying)
1
persistent(lasting, permanent, everlasting, unending, undying)
1
prescription(impulse, oldness)
1
prior
1
received
1
recent
1
recognised
1
recognized
1
relic(last, original, past, primitive, venerable)
1
rusty(last, original, past, primitive, venerable)
1
stale(last, original, past, venerable, outdated)
1
steady
1
superannuated(original, past, venerable, outdated, obsolete)
1
then
10 years ago|3.4k views|share |citing 
APASmart Define. (2016). immemorial thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/immemorial/thesaurus/synonyms
ChicagoSmart Define. 2016. "immemorial thesaurus" https://smartdefine.org/immemorial/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, immemorial thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/immemorial/thesaurus/synonyms>.
MLASmart Define. "immemorial thesaurus" 29 February 2016. Web. 25 September 2026. <https://smartdefine.org/immemorial/thesaurus/synonyms>