| has-been(adjective, vogue, the past) | |
| hoary | |
| irrecoverable | |
| lapsed | |
| old-hat(adjective, common, tired, odd, old) | |
| old fashioned(expression, idiom) | |
| olden(adjective, original, odd, old, traditional) | |
| out of use(verb, expression, idiom, phrasal verb) | |
| over | |
| relinquished(adjective, disused) | |
| retired | |
| run out(verb, phrasal verb, oldness, the past) | |
| superannuate(verb, new, used, obsolesce) | |
| time | |
| timeworn(adjective, vogue) | |
| vanished | |
| aged | |
| antebellum | |
| antiquate(verb, date) | |
| blown over(verb, phrasal verb, the past) |
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Obsolete on
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| APA | Smart Define. (2016). obsolete thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/obsolete/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obsolete thesaurus" https://smartdefine.org/obsolete/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, obsolete thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/obsolete/thesaurus/synonyms>. |
| MLA | Smart Define. "obsolete thesaurus" 28 March 2016. Web. 22 September 2026. <https://smartdefine.org/obsolete/thesaurus/synonyms> |