adverb
EXAMPLES FROM CORPUS
▪
But unbeknown to Ivor, Stroud had no intention of parting with the money.
▪
Thus unbeknown to the competitors, the last valid part of the competition was removed four days before the submission date.
▪
Under the old system many women amass secret savings unbeknown to their husbands.
▪
You've crept back unbeknown to me.