1. [syn: once, formerly, at one time, erstwhile, erst]
The Collaborative International Dictionary of English v.0.48:
Erst \Erst\ ([~e]rst), adv. [Orig. superlative of ere; AS.
[=ae]rest. See Ere.] [Archaic]
1. First. --Chaucer.
2. Previously; before; formerly; heretofore. --Chaucer.
Tityrus, with whose style he had erst disclaimed all
ambition to match his pastoral pipe. --A. W. Ward.
At erst, at first; at the beginning.
Now at erst, at this present time. --Chaucer.
WordNet (r) 3.0 (2006):
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]