Synonyms|224Antonyms|31|Broader|1Narrower|0Related|187
1
inexhaustible(adjective, infinite)
1
innumerable(adjective, infinite)
1
legendary
1
limitless(adjective, infinite)
1
long-established
1
moth-eaten(last, original, past, venerable, outdated)
1
mythological
1
never-ceasing
1
never-ending
1
non-stop
1
nonstop
1
nonterminating
1
nonterminous
1
numberless(adjective, infinite)
1
of long standing(expression, idiom)
1
of the folk(expression, idiom)
1
olamic
1
old-fashioned(usual, last, original, conventional, customary)
1
old as history(expression, idiom)
1
old as time(expression, idiom)
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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>