| hard(adjective, tough, severe, evil, difficulty) |
| awful(adjective, great, tough, terrible, fear) |
| burdensome(adjective, tough, severe, difficult, heavy) |
| daunting(adjective, tough, awful, horrible, grand) |
| fearsome(adjective, awful, wonderful, fear, grand) |
| menacing(adjective, bad, tough, severe, unpleasant) |
| strenuous(adjective, tough, severe, rough, difficult) |
| alarming(adjective, bad, awful, heavy, fear) |
| frightening(adjective, awful, terrible, wonderful, disgusting) |
| awe-inspiring(adjective, awful, wonderful, fear, amazing) |
| horrific(adjective, bad, great, tough, fear) |
| imposing(adjective, tough, awful, wonderful, horrible) |
| rough(adjective, hard, tough, nasty, difficult) |
| shocking(adjective, appearance, bad, great, unpleasant) |
| terrifying(adjective, tough, awful, wonderful, grand) |
| dread(fear, dreadful) |
| horrible(adjective, great, tough, unpleasant, awful) |
| severe(adjective, appearance, great, tough, difficult) |
| titanic |
| toilsome(adjective, tough, severe, difficulty, difficult) |