erstwhile, former, old, onetime, one-time, quondam, sometime -- (belonging to some prior time; "erstwhile friend"; "our former glory"; "the once capital of the state"; "her quondam lover")
Overview of adv erstwhile
The adv erstwhile has 1 sense
once, formerly, at one time, erstwhile, erst -- (at a previous time; "at one time he loved her"; "her erstwhile writing"; "she was a dancer once";)
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