| largest(adjective, feature, characteristic, size) |
| mountain(adjective, feature, characteristic, size) |
| swingeing(adjective, feature, characteristic, size) |
| powerful(adjective, strong, tough, difficult, overwhelming) |
| scary(adjective, feeling, cause, fear, frightening) |
| fearful(adjective, great, awful, fear, horrible) |
| intimidating(adjective, difficult, awful, horrible, shocking) |
| awesome(adjective, great, tough, difficult, wonderful) |
| frightful(adjective, great, tough, terrible, fear) |
| onerous(adjective, tough, severe, difficulty, difficult) |
| terrible(adjective, appearance, bad, great, nasty) |
| arduous(adjective, tough, severe, difficulty, rough) |
| dreadful(adjective, great, unpleasant, awful, terrible) |
| redoubtable(adjective, tough, awful, terrible, fear) |
| tough(adjective, strong, severe, difficulty, rough) |
| impressive(adjective, tough, difficult, awful, wonderful) |
| appalling(adjective, bad, great, tough, fear) |
| laborious(adjective, tough, severe, difficulty, rough) |
| difficult(adjective, hard, tough, severe, evil) |
| dire(adjective, tough, awful, fear, horrible) |