27 entries under ancient topic. ×

12
traditional(adjective, state, quality, fashion, usual)
11
old(adjective, usual, last, past, conventional)
10
primeval(adjective, last, original, old, outdated)
8
olden(adjective, original, old, primitive, venerable)
7
prehistoric(adjective, old)
6
age-old(adjective, last, original, old, outdated)
6
antediluvian(adjective, last, original, primitive, venerable)
5
rooted(adjective, old, oldness)
5
time-honored(adjective, old)
5
venerable(adjective, original, past, primitive, outdated)
4
archaic(adjective, last, original, old, venerable)
4
fixed(adjective, old)
4
of yore(expression, adjective, idiom, original, old)
3
forever(adjective, old, vast, lasting, permanent)
3
long-standing(adjective, old)
2
antiquated(adjective, last, original, past, venerable)
2
past(last, original, primitive, venerable, outdated)
2
primitive(last, original, past, venerable, outdated)
1
dated(last, original, past, venerable, outdated)
1
hackneyed(last, original, past, venerable, outdated)
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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>