[syn: once, formerly, at one time, erstwhile, erst]
The Collaborative International Dictionary of English v.0.48:
Erstwhile \Erst`while"\ (-hw[imac]l"), adv.
Till then or now; heretofore; formerly. [Archaic] Erubescence
WordNet (r) 3.0 (2006):
erstwhile
adv 1: at a previous time; "at one time he loved her"; "her
erstwhile writing"; "she was a dancer once"; [syn:
once, formerly, at one time, erstwhile, erst]
adj 1: belonging to some prior time; "erstwhile friend"; "our
former glory"; "the once capital of the state"; "her
quondam lover" [syn: erstwhile(a), former(a), old,
onetime(a), one-time(a), quondam(a), sometime(a)]