Synonyms of unbeknownst
- 1. unbeknown(predicate), unbeknownst(predicate), unknown (vs. known)
- usage: (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"
- 1. unbeknown, unbeknownst
- usage: without someone's knowledge; "unbeknownst to me, she made all the arrangements"
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