Synonyms and related words :
baneful, bloodthirsty, bloody, bloody-minded, calamitous, cataclysmal, cataclysmic, catastrophic, consuming, consumptive, cruel, cutthroat, deadly, demolishing, demolitionary, depredatory, desolating, destroying, destructive, devastating, disastrous, doomful, fatal, fateful, fratricidal, gory, homicidal, internecine, murderous, nihilist, nihilistic, ravaging, red-handed, ruining, ruinous, sanguinary, slaughterous, subversionary, subversive, suicidal, vandalic, vandalish, vandalistic, wasteful, wasting, withering