WordWeb Online

1. 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"
    
2. A state characterized by foul or disgusting dirt and refuse
   - filth, filthiness, nastiness
    
3. (of weather) the badness of the weather
   "they were wearied with the foulness of the weather";
   - raininess
    
4. The attribute of having a strong offensive smell
   - malodorousness, stinkiness, rankness, fetidness

Type of: aroma, badness, dark, darkness, odor [US], odour [Brit, Cdn], olfactory property, scent, severeness, severity, smell, unsanitariness, wickedness

Encyclopedia: Foulness