Synonyms|224Antonyms|31|Broader|1Narrower|0Related|187
4
everlasting(adjective, infinite)
4
fixed(adjective, old, ancient)
4
hoary
4
of yore(expression, adjective, idiom, original, old)
4
perpetual(adjective, infinite)
4
remote(last, original, past, primitive, venerable)
3
conventional
3
forever(adjective, old, vast, lasting, permanent)
3
infinite(adjective, infinite)
3
interminable(adjective, infinite)
3
long-standing(adjective, old, ancient)
3
once(last, original, past, primitive, venerable)
3
prescriptive(adjective, oldness)
2
ageless(lasting, permanent, everlasting, unending, undying)
2
antiquated(adjective, last, original, past, venerable)
2
constant
2
continual
2
elderly
2
erstwhile(last, original, past, primitive, venerable)
2
former(last, original, past, primitive, venerable)
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APASmart Define. (2016). immemorial thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/immemorial/thesaurus/synonyms
ChicagoSmart Define. 2016. "immemorial thesaurus" https://smartdefine.org/immemorial/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, immemorial thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/immemorial/thesaurus/synonyms>.
MLASmart Define. "immemorial thesaurus" 29 February 2016. Web. 24 September 2026. <https://smartdefine.org/immemorial/thesaurus/synonyms>