1
done(last, original, past, traditional, venerable)
1
eternally
1
eterne
1
ever-being
1
ever-durable
1
ever-during
1
everliving
1
folk
1
fore
1
hackneyed(last, original, past, venerable, outdated)
1
hallowed
1
handed down
1
heroic
1
illimitable(adjective, infinite)
1
immeasurable(adjective, infinite)
1
immutable(lasting, permanent, everlasting, unending, undying)
1
imperishable(vast, lasting, permanent, everlasting, unending)
1
incalculable(adjective, infinite)
1
incessant
1
indefinite(lasting, permanent, everlasting, unending, undying)
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>