mortal

baneful, deleterious, destructive, harmful, injurious, noxious, pernicious, truculent

infectious, infective, pestilential, poisonous, sublethal, toxic, virulent

dangerous, grave, grievous, hazardous, jeopardizing, menacing, parlous, perilous, risky, serious, threatening, ugly, unhealthy, unsound

bloody, internecine, sanguinary, sanguine

cadaverous

ghostlike, ghostly, phantom, spectral

inactive, inert, inoperative, lifeless, quiescent, still

macabre

baleful, fatal, fateful, fell, killer, lethal, murderous, pestilent

anthropoid, creatural, hominid, humanlike, humanoid

adverse, argumentative, bellicose, belligerent, clashing, combative, conflicting, contentious, contrary, disputatious, militant, opposed, pugnacious, quarrelsome, resisting, scrappy, truculent

antisocial, cold, cool, disagreeable, disapproving, distant, frigid, icy

biased, prejudiced

discourteous, ill-bred, ill-mannered, impertinent, impolite, inconsiderate, rude, surly, uncivil, unfavorable, unkind, unmannerly, unpleasant, unsociable

acrimonious, bitter, despiteful, hateful, malevolent, malicious, malign, malignant, opprobrious, rancorous, spiteful, unloving, vindictive, virulent