Synonyms and related words :
bad, bad for, baneful, contaminated, deleterious, detrimental, diseased, disgusting, foul, harmful, hideous, horrible, hurtful, injurious, insalubrious, insanitary, loathsome, mischievous, morbid, morbific, noisome, noxious, obscene, pathogenic, pathological, peccant, pernicious, pestiferous, polluted, repellent, repulsive, septic, sickly, tainted, unhealthful, unhealthy, unhygienic, unsanitary, unsound