dead·ly adj dead·li·er, -est: likely to cause or capable of causing death; also: dangerous (2)◇ Deadly and dangerous are sometimes used interchangeably, esp. in connection with weapons or instruments.
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.
aiming to destroy, aiming to kill, annihilating, attended with death, baleful, calamitous, capital, cataclysmic, consuming, dangerous, dangerous to life, death-bringing, death-dealing, deathful, deathly, destroying, destructive, disastrous, envenomed, exitialis, fatal, feral, grave, homicidal, incurable, internecine, killing, lethal, lethiferous, malignant, mephitic, miasmic, mortal, mortifer, mortiferous, murderous, noxious, perniciosus, pernicious, pestiferous, poisoned, poisonous, ruinous, sanguinary, seriously dangerous, slaughterous, steeped in poison, stifling, suffocating, tending to cause death, toxic, toxicant, unhealthy, unsafe, venomous
associated concepts: armed with a deadly weapon, assault with a deadly weapon, deadly attack, deadly force, deadly weapon, possession of a deadly weapon
dangerous, deleterious, diabolic, dire, disastrous, fatal, irremediable, lethal, malevolent, malignant, peccant (unhealthy), pedestrian, pernicious, pestilent, ruthless, toxic, virulent
Burton's Legal Thesaurus. William C. Burton. 2006