perilous perilous /ˈpɛrələs/

adjective

1. () Fraught with danger  ( parlous , touch-and-go , precarious , perilous )
   fraught with danger
    Dangerous waters
   dangerous waters
    A parlous journey on stormy seas
   a parlous journey on stormy seas
    A perilous voyage across the Atlantic in a small boat
   a perilous voyage across the Atlantic in a small boat
    The precarious life of an undersea diver
   the precarious life of an undersea diver
    Dangerous surgery followed by a touch-and-go recovery
   dangerous surgery followed by a touch-and-go recovery