| heartrending(adjective, hard, difficult, complex) |
| sorrowful(adjective, upset, bad, severe, happy) |
| nasty(adjective, hard, difficult, unpleasant, awful) |
| tragic(adjective, bad, severe, sad, sorrow) |
| heavy(adjective, bad, tough, severe, difficult) |
| lamentable(adjective, bad, severe, happy, sad) |
| awful(adjective, terrible, horrible, painful, sickness) |
| dreadful(adjective, severe, sad, tender, unhappy) |
| miserable(adjective, bad, sad, sorrow, awful) |
| mournful(adjective, bad, severe, happy, sad) |
| rough(adjective, hard, difficult, unpleasant, complex) |
| taxing(adjective, hard, severe, difficult, complex) |
| trying(adjective, hard, difficult, complex, painful) |
| backbreaking(adjective, hard, difficult, complex) |
| laborious(adjective, hard, difficult, complex) |
| sensitive(adjective, hard, difficult, complex, painful) |
| profound(adjective, hard, difficult, complex) |
| punishing(adjective, hard, difficult, complex) |
| rugged(adjective, hard, tough, severe, difficult) |
| ambitious(adjective, hard, difficult, complex) |