Definitions for unbeknownˌʌn bɪˈnoʊn; -ˈnoʊnst
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Random House Webster's College Dictionary
un•be•knownˌʌn bɪˈnoʊn; -ˈnoʊnst(adj.)
also un•be•knownst
unknown; without one's knowledge (usu. fol. by to).
Origin of unbeknown:
1630–40; un -1+beknown (late ME beknowe, ptp. of beknowen); see be -, known
Princeton's WordNet
unbeknown(p), unbeknownst(p)(adverb)
(usually used with `to') occurring or existing without the knowledge of
"a crisis unbeknown to me"; "she had been ill for months, unbeknownst to the family"
unbeknown, unbeknownst(adverb)
without someone's knowledge
"unbeknownst to me, she made all the arrangements"
Wiktionary
unbeknown(Adjective)
Not beknown
Webster Dictionary
Unbeknown(adj)
not known; unknown
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