| involved(adjective, hard, difficult, complex) |
| profound(adjective, hard, difficult, complex) |
| hurtful(adjective, hard, severe, sharp, tender) |
| ambitious(adjective, hard, difficult, complex) |
| bitter(adjective, hard, moving, tough, evil) |
| impossible(adjective, hard, difficult, complex) |
| rugged(adjective, hard, tough, difficult, harsh) |
| stubborn(adjective, hard, tough, difficult, harsh) |
| tricky(adjective, hard, difficult, complex) |
| troubled(adjective, hard, difficult, complex) |
| weighty(adjective, hard, difficult, complex) |
| piercing(adjective, severe, sharp, tender, intense) |
| tormenting(adjective, severe, tender, raw, shocking) |
| unpleasant(adjective, hard, tough, severe, sharp) |
| acute(adjective, severe, sharp, harsh, delicate) |
| distasteful(adjective, like, tender, pain, offensive) |
| aching(adjective, sharp, rough, delicate, tender) |
| burning(adjective, hard, severe, sharp, tender) |
| torturous(adjective, severe, shocking, upsetting, disturbing) |
| awful(adjective, bad, severe, tender, offensive) |