48 entries under outdated topic. ×
| archaic(last, original, past, venerable) | |
| cast-off(adjective, last, original, primitive, venerable) | |
| crumbling(last, original, past, traditional, venerable) | |
| dated(last, original, past, venerable) | |
| decayed(last, original, past, traditional, venerable) | |
| done(last, original, past, traditional, venerable) | |
| hackneyed(last, original, past, venerable) | |
| moth-eaten(last, original, past, venerable) | |
| obsolete(adjective, last, original, previous, other) | |
| old-fashioned(last, original, past, venerable) | |
| old-time(last, original, past, primitive, venerable) | |
| oldfangled(adjective, last, original, primitive, venerable) | |
| original(last, past, traditional, primitive, venerable) | |
| outmoded(last, original, past, other) | |
| primordial(last, original, past, primitive, venerable) | |
| pristine(last, original, past, primitive, venerable) | |
| relic(last, original, past, primitive, venerable) | |
| remote(last, original, past, primitive, venerable) | |
| rusty(last, original, past, primitive, venerable) | |
| stale(last, original, past, venerable) |
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| APA | Smart Define. (2016). once thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/once/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "once thesaurus" https://smartdefine.org/once/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, once thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/once/thesaurus/synonyms>. |
| MLA | Smart Define. "once thesaurus" 30 March 2016. Web. 20 September 2026. <https://smartdefine.org/once/thesaurus/synonyms> |