dangerous, unsafe, flammable, toxic, harmful, unhealthful, combustible, hazardous waste, treacherous, biohazardous, carcinogenic, radioactive, perilous, unstable, unhealthy, injurious, incombustible, poisonous, unsuitable, nonexplosive, pollutant, slippery, unadvisable, risky, problematic, inflammable, ignitable, chromic acid, noxious, polluted, hazmat, methyl chloride, contaminant, safe, radioactive material, polychlorinated biphenyl, toxic waste, pyrophoric, chemical, substandard, burnable, corrosive, odorous, methyl ethyl ketone, detrimental, undesirable, transuranic, impassible, inadvisable, hydrofluoric acid, methylene chloride, americium, calcium hypochlorite, carbon disulfide, nitric acid, carbon tetrachloride, inhospitable, immiscible, unacceptable, trafficable, smelly, allyl alcohol, friable, slicken, hydrogen chloride, floatable, stressful, yucky, unbreathable, nonflammable, impassable, neutron radiation, dicey, decomposable, carbon monoxide, unpleasant, destructive, sodium dichromate, unreclaimed, icy, furan, respirable, nonmetal, iodised, aqueous ammonia, nonradioactive, odoriferous, radioactive waste, unhygienic, nitrous acid, dioxane, inert, sulfuric, deadly, noncombustible, deleterious, heptyl, sodium hydroxide, noncomplying, acidic, unfit, uninhabitable, heavy, absorbent, bs, bushels, plowing, resonant, aces, ap, bit, byte, carbon, chocolate, commercial, cpu, descriptive, deviant, dozen, grams, guineas, hits, nonhazardous, arduous, unrewarding, demanding, challenging, altering, difficult, rewarding, ticklish, fatiguing, noncritical, chancy, distasteful

black ice, carson, growler, hairy, hornet's nest, hornets' nest, rachel carson, rachel louise carson, rough

dangerous, risky, unsafe, venturesome, venturous