- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
| olden(adjective, new, original, primitive) | |
| stale(adjective, original, outdated, obsolete) | |
| out-of-date(venerable, obsolete, antique, antiquated) | |
| relic(last, original, venerable, outdated) | |
| elderly | |
| moth-eaten(original, gray, venerable, outdated) | |
| obsolescent(adjective, unfashionable, outdated, obsolete) | |
| paleolithic(adjective, oldness) | |
| remote(last, original, venerable, outdated) | |
| moldy(dead, out, stale, antiquated) | |
| outworn(dead, out, unfashionable, antiquated) | |
| rusty(original, gray, venerable, outdated) | |
| worn-out(last, original, past, outdated) | |
| behind the times(expression, idiom, unfashionable, antiquated) | |
| old-fangled(unfashionable, obsolete, antiquated, archaic) |
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| APA | Smart Define. (2015). antediluvian thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/antediluvian/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "antediluvian thesaurus" https://smartdefine.org/antediluvian/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, antediluvian thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/antediluvian/thesaurus/synonyms>. |
| MLA | Smart Define. "antediluvian thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/antediluvian/thesaurus/synonyms> |