furtive, sneak, sneaky, stealthy, surreptitious — marked by quiet and caution and secrecy
taking pains to avoid being observed, "a furtive manner", "a sneak attack", "stealthy footsteps", "a surreptitious glance at his watch"
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Today's word comes from Matthew in Louisiana, who, along with Austin, does the webcomic
Garage Raja. Thanks!
While Dawn is gawking at the rocket, she is yanked off her feet. Olivia has Dawn in a headlock, and Dawn is gasping for breath.
Olivia:You know, if you were more surreptitious, you would have gotten away with it...you little worm...