| Answer | Crossword Clue |
|---|---|
| SOOTIER | More fuliginous |
| SOOTY | Fuliginous. |
| SOOTY | Fuliginous |
| SOOT | Fuliginous substance |
| SOOTIEST | Most fuliginous |
| SMOKIEST | Most fuliginous |
| fuliginosity | the state of being fuliginous |
| fuliginosities | FULIGINOSITY, the state of being fuliginous |
| fuliginousness | FULIGINOUS, sooty; having a dark or dusky color |
| fuliginously | FULIGINOUS, sooty; having a dark or dusky color |
