fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"
dangerously insecure; "a precarious footing on the ladder"
not secure; beset with difficulties; "a shaky marriage"
affording no ease or reassurance; "a precarious truce"
