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Related to deadly: Deadly Sins
deadlyadjective aiming to destroy, aiming to kill, attended with death, baleful, calamitous, capital, consuming, dangerous, dangerous to life, death-dealing, deathful, deathly, destroying, destructive, disastrous, envenomed, exitialis, fatal, feral, grave, homicidal, incurable, internecine, killing, lethal, lethiferous, malignant, mephitic, miasmic, mortal, mortiferous, murderous, noxious, perniciosus, pernicious, pestiferous, 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
See also: dangerous, deleterious, diabolic, dire, disastrous, fatal, irremediable, lethal, malevolent, malignant, peccant, pedestrian, pernicious, pestilent, ruthless, toxic, virulent