| Answer | Crossword Clue |
|---|---|
| ALOIN | Bitter substance from aloes. |
| LININ | Bitter substance from flax. |
| ALUM | Bitter substance. |
| ALOIN | Bitter, medicinal substance |
| ALOIN | Bitter, crystalline substance. |
| ALUM | Bitter substance used in dyes. |
| THEINE | Bitter substance found in tea. |
| CYANIDE | Dangerous substance that smells like bitter almonds |
