1 There is some evidence that hydrazine sulfate is ineffective for treating ovarian cancer, colorectal cancer, breast cancer, lung cancer, pancreatic cancer, cervical cancer, prostate cancer, uterine cancer, melanoma, and other kinds of cancer.  Lung cancer.
: having or showing the proud and unpleasant attitude of people who think that they are better or more important than other people. a supercilious professor. a superciliou s tone/attitude. supercilious behavior. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
1. perilous-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. parlous, touch-and-go, precarious.