| hairy(adjective, severe, harsh, coarse, irregular) |
| hard(adjective, severe, sharp, flat, rough) |
| harsh(adjective, hard, severe, flat, rough) |
| hoarse(adjective, hard, severe, sharp, flat) |
| incompatible(adjective, hard, severe, sharp, flat) |
| irregular(adjective, harsh, coarse, uneven, rugged) |
| jangling(adjective, hard, severe, sharp, flat) |
| jarring(adjective, hard, severe, sharp, flat) |
| knobby(adjective, harsh, coarse, irregular, uneven) |
| knotty(adjective, harsh, coarse, irregular, uneven) |
| nappy(adjective, harsh, coarse, irregular, uneven) |
| nodular(adjective, harsh, coarse, irregular, uneven) |
| noisy(adjective, hard, severe, sharp, flat) |
| off-key(adjective, hard, severe, sharp, flat) |
| out-of-key(adjective, hard, severe, sharp, flat) |
| out-of-tune(adjective, hard, severe, sharp, flat) |
| rasping(adjective, hard, severe, sharp, flat) |
| raucous(adjective, hard, severe, sharp, flat) |
| ridged(adjective, harsh, coarse, irregular, uneven) |
| rigid(adjective, hard, severe, sharp, flat) |