| extreme(adjective, hard, tough, severe, harsh) |
| radical(adjective, severe, extreme) |
| severe(adjective, hard, tough, rough, difficult) |
| excessive(adjective, severe, harsh, exceptional, unreasonable) |
| desperate(adjective, hard, severe, rough, harsh) |
| harsh(adjective, hard, tough, severe, rough) |
| dire(adjective, severe, extreme, crucial, urgent) |
| strong(adjective, severe, violent, extreme, aggressive) |
| forceful(adjective, severe, extreme) |
| sharp(adjective, hard, tough, severe, harsh) |
| exorbitant(adjective, severe, harsh, extreme, radical) |
| violent(adjective, hard, tough, severe, rough) |
| intense(adjective, extreme) |
| acute |
| forcible(adjective, powerful, aggressive) |
| great(adjective, severe, intense, extreme, impulsive) |
| rigorous(adjective, severe, harsh, cruel, brutal) |
| stiff(adjective, hard, severe, rough, harsh) |
| heroic |
| powerful(adjective, severe, violent, aggressive, compulsory) |