Synset

fraught with danger
<adj.all>   freq. cnt.: 5 freq. cnt.: 4 freq. cnt.: 1

parlous

perilous

precarious

touch-and-go

sample sentences

"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"