Unbeknown Definition
ŭnbĭ-nōn
adjective
Occurring or existing without being known; unknown.
A crisis unbeknown to us.
American Heritage
Not beknown.
Wiktionary
Synonyms:
Origin of Unbeknown
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un– obsolete beknown known (from Middle English beknowen) (past participle of beknowen to get to know) (from Old English becnāwan) (be- be-) (cnāwan to know know)
From American Heritage Dictionary of the English Language, 5th Edition
-
Back-formation of unbeknownst.
From Wiktionary
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