adj. 25B6; adjective
a murderous attack : HOMICIDAL, brutal, violent, savage, ferocious, fierce, vicious, bloodthirsty, barbarous, barbaric; fatal, lethal, deadly, mortal, death-dealing; archaic sanguinary.
(informal) a murderous schedule : ARDUOUS, gruelling, strenuous, punishing, onerous, exhausting, taxing, difficult, rigorous; informal killing, hellish.