Erstwhile and On occasion

Erstwhile

Erstwhile adverb - At an earlier or previous time.

On occasion and erstwhile are semantically related In some cases you can use "On occasion" instead an adverb "Erstwhile".

On occasion

On occasion adverb - Now and then or here and there.

Erstwhile and on occasion are semantically related in in the past topic. Sometimes you can use "Erstwhile" instead an adverb phrase "On occasion".
Cite this Source
On occasion and Erstwhile. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/erstwhile/on_occasion
Erstwhile & On occasion. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/erstwhile/on_occasion>.
On occasion or Erstwhile. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/erstwhile/on_occasion.
Google Ngram Viewer shows how "erstwhile" and "on occasion" have occurred on timeline