skulking

evading duty or work by pretending to be incapacitated

• “they developed a test to detect malingering”

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”