American Heritage Dictionary
(2)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
I stress "briefly" because as soon as his erstwhile-stubby distal pseudopodia elongate another couple of centimeters, he'll be ready to mitose.— The Comics Curmudgeon
For Salesforce. com -- erstwhile upstart, now on-demand market maker with a market cap of US$6. 8 billion -- being invited to join this exclusive group of companies is a milestone that few other achievements can beat.— E-Commerce Times
She recalled the erstwhile mutual hatred and mistrust of Murray and Darnley, and saw how it might serve her in this emergency Instantly she summoned Murray to her presence with the message that she welcomed his return.— The Historical Nights' Entertainment First Series
He who erstwhile was accustomed and preferred to live poorly, now at this feast enjoys himself as much as his means will allow.... People are not only generous towards themselves, but also towards their fellow-men.— Christmas in Ritual and Tradition, Christian and Pagan
The body dangled now, twisted half in and half out the window We could see several of Miko's men--erstwhile members of our crew and steward corps--scurrying from the turret along the upper bridge toward the dark and silent radio room.— Brigands of the Moon

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