#1 foulness n. disgusting wickedness and immorality; "he understood the foulness of sin"; "his display of foulness deserved severe punishment"; "mouths which speak such foulness must be cleansed". wn
#2 foulness n. [filth, filthiness, nastiness] a state characterized by foul or disgusting dirt and refuse. wn
#3 foulness n. [raininess] (of weather) the badness of the weather; "they were wearied with the foulness of the weather". wn
#4 foulness n. [malodorousness, stinkiness, rankness, fetidness] the attribute of having a strong offensive smell. wn
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