Mephitical is an adjective that refers to something that is foul-smelling or noxious. Synonyms for mephitical include malodorous, putrid, pungent, fetid, repugnant, rank, noisome, foul, stinky, and smelly. These words are often used to describe something that emits a strong, unpleasant odor, such as a sewer or garbage dump. Mephitical can also be used to describe something that is poisonous or harmful, providing additional synonyms such as toxic, lethal, dangerous, harmful, and hazardous. When looking for an alternative to mephitical, there are several options that capture the same essence of unpleasantness and danger.