- Definitions|2
- Thesaurus|443
- Abbreviations|0
57 entries under adjective topic. ×
| traditional(state, quality, fashion, usual) | |
| old(usual, last, past, conventional) | |
| primeval(last, original, old, outdated) | |
| olden(original, old, primitive, venerable) | |
| dateless(lasting, permanent, everlasting, unending) | |
| prehistoric(old, ancient) | |
| age-old(last, original, old, outdated) | |
| antediluvian(last, original, primitive, venerable) | |
| timeless(vast, lasting, infinite, permanent) | |
| ancient | |
| antique(last, original, primitive, venerable) | |
| eternal(pause, endless, infinite) | |
| rooted(old, ancient, oldness) | |
| time-honored(old, ancient) | |
| venerable(original, past, primitive, outdated) | |
| archaic(last, original, old, venerable) | |
| ceaseless | |
| customary | |
| early(last, original, primitive, venerable) | |
| endless |
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| APA | Smart Define. (2016). immemorial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/immemorial/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "immemorial thesaurus" https://smartdefine.org/immemorial/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, immemorial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/immemorial/thesaurus/synonyms>. |
| MLA | Smart Define. "immemorial thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/immemorial/thesaurus/synonyms> |