1. The state of being dirty with soot
   "The chimney sweep's face was covered in smuttiness";
   - sootiness
    
2. Obscenity in speech or writing
   "The smuttiness of the comedian's routine offended some audience members";
   - dirtiness

Type of: bawdiness, dirtiness, lewdness, obscenity, salaciousness, salacity, uncleanness