Old
Old adjective - Dating or surviving from the distant past.
Usage example: an extremely old piece of jewelry was discovered in the Egyptian ruins
Obsolete is a synonym for old in out of date topic. In some cases you can use "Obsolete" instead an adjective "Old", when it comes to topics like old-fashioned, outdated.
Obsolete
Obsolete adjective - Having passed its time of use or usefulness.
Usage example: I was told my old printer is obsolete and I can't get replacement parts
Old is a synonym for obsolete in outdated topic. You can use "Old" instead the word "Obsolete" as an adjective or a noun, if it concerns topics such as in vogue, no longer in use.
Mutual synonyms
Cite this Source
Obsolete and Old. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/old/obsolete
Old & Obsolete. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/old/obsolete>.
Obsolete or Old. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/old/obsolete.
Google Ngram Viewer shows how "old" and "obsolete" have occurred on timeline