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Webster 1913 Edition

adv.

Once; for a time.

Though, under color of shepherds,

somewhile

There crept in wolves, full of fraud and guile.

Spenser.

adv.

[some and while.] Once; for a time.

somewhile ‎(not comparable)

Sometimes; at one time or another; from time to time; at times
For a while; at one time; for a time
Tho, under colour of shepeheards, somewhile / There crept in wolves, ful of fraude and guile. — Spenser.