Bygone and Outdated

Bygone

Bygone adjective - No longer existing.

Outdated is a synonym for bygone in new topic. In some cases you can use "Outdated" instead an adjective "Bygone".

Outdated

Outdated adjective - Having passed its time of use or usefulness.
Usage example: an outdated rotary telephone

Bygone is a synonym for outdated in old-fashioned topic. You can use "Bygone" instead an adjective "Outdated", if it concerns topics such as new.
Cite this Source
Outdated and Bygone. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/bygone/outdated
Bygone & Outdated. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/bygone/outdated>.
Outdated or Bygone. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/bygone/outdated.
Google Ngram Viewer shows how "bygone" and "outdated" have occurred on timeline