quadripartiteEnglishMerriam-Webster Dictionaryn='true'>, murderous, noxious, pernicious, poisonous, ruinous, threatening, troublesome, unhealthy, woundingdangerous, hazardous, imperiling (or imperilling), jeopardizing, parlous, perilous, risky, unsafecalumnious, defamatory, detractive, offensive, scathing, slanderousantagonistic, antipathetic, inhospitable, intolerant, uncongenial, uncooperativecompeting, conflicting