1. [n]  evading duty or work by pretending to be incapacitated; "they developed a test to detect malingering"
2. [adj]  marked by quiet and caution and secrecy; taking pains to avoid being observed; "a furtive manner"; "a lurking prowler"; "a sneak attack"; "stealthy footsteps"; "a surreptitious glance at his watch"; "someone skulking in the shadows"

SKULKING is a 8 letter word that starts with S.