Then, with the lightning action in which he was such an adept, he noiselessly slipped his hand under the bottom of the tent-cloth, which was far from being pinned tightly down, lifted it a little way, keeping his eye to the hole, snatched the note from her fingers, dropped the canvas, and ran away in the gloom towards the bank and ditch, smiling at the scream of astonishment which burst from her.
There are no more uses of "adept" in the book.
Show samples from other sources
Beyond the windows, there were people at tables inside. enjoying whatever it was they’d ordered, all of them adept with their chopsticks.
Nicholas Sparks -- The Longest Ride
Julian was adept at coaxing the lizards to crawl into his palm and sleep there as he stroked their heads with his thumb.