[awhile] adv (bef. 12c): for a while usage Although considered a solecism by many commentators, awhile, like several other adverbs of time and place, is often used as the object of a preposition "for awhile there is a silence --Lord Dunsany".
AWHILE
Meaning of AWHILE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012