Definition of Unbeknownst
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(adjective satellite) (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"
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(adverb) without someone's knowledge; "unbeknownst to me, she made all the arrangements"
Antonyms of Unbeknownst
No Antonyms Found.
Homophones of Unbeknownst
No Homophones Found.