| Rating | Solver | Clue |
|---|---|---|
| ADULTERATING | Making impure | |
| TAINTING | Making impure | |
| ADULTERATION | Making something impure | |
| BARILLA | The alkali produced from the plant, being an impure carbonate of soda, used for making soap, glass, etc., and for bleaching purposes. | |
| OCHRE | A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), -- used as a pigment in making paints, etc. The name is also applied to clays of other colors. | |