Erstwhile and Early

Erstwhile adjective - Having been such at some previous time.

Early and erstwhile are semantically related. In some cases you can use "Early" instead the word "Erstwhile" as an adjective or an adverb.

Early adjective - Relating to or occurring near the beginning of a process, series, or time period.

Erstwhile and early are semantically related. Sometimes you can use "Erstwhile" instead the word "Early" as an adjective or an adverb.