The films are taken in a variety of locations, all presumably scouted out and surreptitiously wired for sound and video.
Then, shuffling, she surreptitiously grabs the one he chose with her mouth while pretending to cut the deck.
A man sat opposite her, took out his phone, and surreptitiously photographed her eating.
mid-15c., from Latin surrepticius "stolen, furtive, clandestine," from surreptus, past participle of surripere "seize secretly," from sub "from under" (hence, "secretly") + rapere "to snatch" (see rapid). Related: Surreptitiously.