| Adulterate | (v) To make impure |
| Bane | (n) Cause of harm or annoyance |
| Boon | (n) A benefit |
| Inimical | (adj) Unfriendly; hostile |
| Malevolent | (adj) Showing ill will |
| Panacea | (n) A cure-all |
| Pernicious | (adj) Very harmful |
| Salutary | (adj) Helpful or healthful |
| Toxic | (adj) Poisonous |
| Vitiate | (adj) Showing ill will |