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1. Lie in wait, lie in ambush, behave in a sneaky and secretive manner
   - lurk
    
2. Avoid responsibilities and duties, e.g., by pretending to be ill
   - malinger
    
3. Move furtively
   "The lonely man skulks down the main street all day"

Derived forms: skulked, skulking, skulks

Type of: conceal, fiddle, goldbrick [N. Amer, informal], hide, shirk, shrink from, walk

Encyclopedia: Skulk