acrophobia, adversary, agoraphobia, ambush, armada, assailant, baleful, bigamy, blackmail, brutality, cataclysm, clandestine, clash, conflagration, dangerous, dastardly, daunting, destructive, deviant, dictatorial, dire, distort, doomsday, dread, escalate, espionage, exterminate, extort, extortionate, famine, fatal, fluke, fusillade, garrison, gruesome, harassment, hooligan, hostile, incursion, inimical, jeopardy, larceny, maelstrom, malefactor, massacre, menace, menacing, mercenary, miscreant, noxious, ominous, pandemic, paranoia, peril, pernicious, plummet, portentous, precipitous, psychopath, ramshackle, reprisal, rickety, salvo, savage, shooter, sordid, stampede, stymie, swindle, treason, trepidation, turbulent, tyrannical, unapproachable, unscrupulous, vanquish, wrath, xenophobic