erstwhile in a sentence

adv.

Definition

Erstwhile means formerly or previously, often referring to someone or something that has changed status or role.

The erstwhile champion returned to the sport after a lengthy hiatus.
Despite being an erstwhile rival, she offered her support during the tough times.
His erstwhile enthusiasm for the project had dwindled to mere obligation.
The building, now a trendy café, was an erstwhile factory bustling with activity.
Their erstwhile friendship faded as life took them in different directions.