unbeknownst
adv 1: without someone's knowledge; "unbeknownst to me, she made
all the arrangements" [syn: {unbeknown}, {unbeknownst}]
adj 1: (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" [syn:
{unbeknown(p)}, {unbeknownst(p)}]