Erstwhile
Erstwhile adjective - Having been such at some previous time.
Usage example: my erstwhile friend ignored me when I ran into her at the mall
Onetime
Onetime adjective - Having been such at some previous time.
Usage example: the onetime English teacher now works for a newspaper
Mutual synonyms
Cite this Source
Onetime and Erstwhile. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/erstwhile/onetime
Erstwhile & Onetime. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/erstwhile/onetime>.
Onetime or Erstwhile. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/erstwhile/onetime.
Google Ngram Viewer shows how "erstwhile" and "onetime" have occurred on timeline