Onetime and Obsolete

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Onetime adjective - Happening only once.

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Obsolete and onetime are semantically related. In some cases you can use "Obsolete" instead an adjective "Onetime".

Obsolete adjective - Having passed its time of use or usefulness.

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Onetime and obsolete are semantically related. Sometimes you can use "Onetime" instead an adjective "Obsolete".

Cite this Source

Obsolete and Onetime. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/onetime/obsolete

Onetime & Obsolete. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/onetime/obsolete>.

Obsolete or Onetime. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/onetime/obsolete.

Google Ngram Viewer shows how "onetime" and "obsolete" have occurred on timeline