Marked by quiet and caution and secrecy; taking pains to avoid being observed. Synonyms:furtive, sneaky, stealthy, surreptitious."A sneak attack" , "Stealthy footsteps" , "A surreptitious glance at his watch"
... easy now, with that sneaker out of the way. What d'ye suppose Jeff meant to do?" asked the other, as he fell in at the side of his chum when Maurice ... — The House Boat Boys • St. George Rathborne
...
