| Solution | Length | |
|---|---|---|
| 3 letters | ||
| ant | 3 | |
| 4 letters | ||
| asps | 4 | |
| sore | 4 | |
| 5 letters | ||
| krait | 5 | |
| rough | 5 | |
| sharp | 5 | |
| tough | 5 | |
| toxic | 5 | |
| 6 letters | ||
| vipers | 6 | |
| cobras | 6 | |
| mambas | 6 | |
| severe | 6 | |
| infect | 6 | |
| adders | 6 | |
| aspish | 6 | |
| mortal | 6 | |
| 7 letters | ||
| ELAPIDS | 7 | |
| violent | 7 | |
| profane | 7 | |
| peccant | 7 | |
| vicious | 7 | |
| BANEFUL | 7 | |
| noxious | 7 | |
| TAIPANS | 7 | |
| 8 letters | ||
| morbific | 8 | |
| rigorous | 8 | |
| vehement | 8 | |
| spiteful | 8 | |
| mephitic | 8 | |
| virulent | 8 | |
| VIPERINE | 8 | |
| 9 letters | ||
| vitriolic | 9 | |
| repugnant | 9 | |
| sarcastic | 9 | |
| splitting | 9 | |
| rancorous | 9 | |
| poisonous | 9 | |
| vitiative | 9 | |
| malignant | 9 | |
| 10 letters | ||
| corruptive | 10 | |
| SLANDEROUS | 10 | |
| 11 letters | ||
| deleterious | 11 | |
| PREJUDICIAL | 11 | |
| QUARRELSOME | 11 | |
| PESTIFEROUS | 11 | |
| 14 letters | ||
| unconscionable | 14 | |