57 entries under adjective topic. ×

12
traditional(state, quality, fashion, usual)
11
old(usual, last, past, conventional)
10
primeval(last, original, old, outdated)
8
olden(original, old, primitive, venerable)
7
dateless(lasting, permanent, everlasting, unending)
7
prehistoric(old, ancient)
6
age-old(last, original, old, outdated)
6
antediluvian(last, original, primitive, venerable)
6
timeless(vast, lasting, infinite, permanent)
5
ancient
5
antique(last, original, primitive, venerable)
5
eternal(pause, endless, infinite)
5
rooted(old, ancient, oldness)
5
time-honored(old, ancient)
5
venerable(original, past, primitive, outdated)
4
archaic(last, original, old, venerable)
4
ceaseless
4
customary
4
early(last, original, primitive, venerable)
4
endless
<123>
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APASmart Define. (2016). immemorial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/immemorial/thesaurus/synonyms
ChicagoSmart Define. 2016. "immemorial thesaurus" https://smartdefine.org/immemorial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, immemorial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/immemorial/thesaurus/synonyms>.
MLASmart Define. "immemorial thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/immemorial/thesaurus/synonyms>