1. erstwhile - Adjective
2. erstwhile - Adverb
4. erstwhile - Adjective Satellite
Till then or now; heretofore; formerly.
Source: Webster's dictionaryNothing in our time is more interesting than the erstwhile capitalist corporation and the erstwhile Communist firm should, under the imperatives of organization, come together as oligarchies of their own members. John Kenneth Galbraith
...the future of the world lies with the yellow man and the brown man now that our erstwhile master, the white-skinned man, has wasted himself through buggery, cell phone usage, and drug abuse. Aravind Adiga
Slaves who ran away in Pennsylvania to join Sir William Howe's occupation of Philadelphia or who ran away in Virginia to join Lord Dumore's "Ethiopian Regiment" found themselves dumped by their erstwhile allies in Nova Scotia or sold back into slavery in the Bahamas. Allen C. Guelzo
at one time he loved her Source: Internet
her erstwhile writing Source: Internet
she was a dancer once Source: Internet