unbeknown
adjective
1 unbeknown
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.
synonym: unbeknownst.
adverb
1 unbeknown
Without someone's knowledge:
— Unbeknownst to me, she made all the arrangements.
synonym: unbeknownst.
Moby thesaurus: able, enigmatic, incalculable, incognizable, mysterious, puzzling, sealed, strange, unapparent, unapprehended, unascertained, uncharted, unclassified, undisclosed, undiscoverable, undiscovered, undivulged, unexplained, unexplored, unexposed ... show more.
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