Erstwhile and Prospective

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

Prospective is an antonym for erstwhile.

Prospective

Prospective adjective - Of or concerned with or related to the future.
Show all Definitions
Synonyms for Prospective

Erstwhile is an antonym for prospective.

Cite this Source
Prospective and Erstwhile. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/erstwhile/prospective
Erstwhile & Prospective. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/erstwhile/prospective>.
Prospective or Erstwhile. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/erstwhile/prospective.
Google Ngram Viewer shows how "erstwhile" and "prospective" have occurred on timeline