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unbeknownst

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adjective un·be·knownst \ˌən-bi-ˈnōn(t)st\

Definition of unbeknownst

  1. 1 :  happening or existing without the knowledge of someone specified —usually used with to <unbeknownst to us rumors were flying>

  2. 2 :  unknown



Examples of unbeknownst

  1. <unbeknownst to me, my mother was planning a party>



Variants of unbeknownst

also un·be·known play \-ˈnōn\

Origin of unbeknownst

1un- + obsolete English beknown known; unbeknownst, irregular from unbeknown


First Known Use: 1636



UNBEKNOWNST Defined for Kids

unbeknownst

play
adjective un·be·knownst \ˌən-bi-ˈnōnst\

Definition of unbeknownst

  1. :  happening without someone's knowledge :  unknown <Unbeknownst to him, we were planning a surprise party.>



Variants of unbeknownst

also un·be·known \-ˈnōn\


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