He, unbeknownst to his employees, speaks many predator languages, including cat, which meant he was not as clueless as they took him to be.
During the commotion that follows, the truck outside is forgotten about and unbeknownst to anyone, one of the cylinders begins to leak.
Unbeknownst to the women, the police officers had exchanged their hats and the badge numbers that established their identities were confused.
Unbeknownst to everyone else, he created a race of demons from the fiery lava of the core to be his army.
This move unbeknownst became the fulcrum of the advanced base force's successful future.
Unbeknownst to him, their coolness is the result of an affair his father once had.
I am glad that they were doing all those things unbeknownst to us—perhaps even unbeknownst to themselves—and that they did not need our prompting.
There could be no possibility of dawn raids and take-overs of companies unbeknownst even to the directors.