48 entries under outdated topic. ×
| superannuated(original, past, venerable, obsolete) | |
| time-worn(adjective, last, original, primitive, venerable) | |
| traditional(last, original, past, primitive, venerable) | |
| unfashionable(last, original, past, primitive, venerable) | |
| unoriginal(last, original, past, venerable) | |
| venerable(original, past, primitive, obsolete) | |
| worn-out(last, original, past, other) | |
| cast off(expression, original, obsolete) |
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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> |