| powerful(strong, piercing, strident, noisy, blaring) |
| quarreling(adjective, harsh, different, contrary, conflicting) |
| quarrelsome(adjective, discordant) |
| rackety(loud, piercing, strident) |
| raging(adjective, rough, harsh, dirty, coarse) |
| raising Cain(expression, loud, piercing, strident) |
| raising the roof(expression, idiom, loud, piercing, strident) |
| rambunctious(strong, harsh, wild, loud, piercing) |
| rending |
| resonant(strong, piercing, strident, noisy, blaring) |
| resounding(adjective, strong, piercing, strident, noisy) |
| rigid(adjective, hard, severe, sharp, flat) |
| rioting(adjective, conflicting) |
| riotous(adjective, harsh, wild, loud, piercing) |
| ripping |
| roaring(strong, piercing, strident, noisy, blaring) |
| rowdy(strong, harsh, wild, loud, piercing) |
| rowing(adjective, conflicting) |
| rugged(adjective, hard, severe, sharp, flat) |
| rusty(adjective, hard, severe, sharp, flat) |