| Answer | Crossword Clue |
|---|---|
| SPARSER | Not as dense |
| RARER | Not as dense |
| rare | not dense, as a gas |
| rarer | not dense, as a gas |
| RARE | Not dense |
| SPARSE | Not dense |
| SPARSE | Not dense. |
| RARE | Not dense. |
| thinnest | Not dense |
| SPARSER | Not so dense |
| RARER | Not so dense. |
| SPARSE | Not at all dense |
| kales | hardy cabbage (Brassica oleracea acephala) with curled often finely incised leaves that do not form a dense head |
