| Solution | Length | |
|---|---|---|
| 3 letters | ||
| top | 3 | |
| run | 3 | |
| 4 letters | ||
| race | 4 | |
| rest | 4 | |
| rung | 4 | |
| step | 4 | |
| wadi | 4 | |
| 5 letters | ||
| spoke | 5 | |
| tread | 5 | |
| rotor | 5 | |
| wheel | 5 | |
| stave | 5 | |
| stair | 5 | |
| round | 5 | |
| scale | 5 | |
| river | 5 | |
| 6 letters | ||
| string | 6 | |
| RUNNEL | 6 | |
| roller | 6 | |
| 7 letters | ||
| rotator | 7 | |
| rivulet | 7 | |
| 8 letters | ||
| waterway | 8 | |
| 9 letters | ||
| whirligig | 9 | |
| 10 letters | ||
| roundabout | 10 | |
| 11 letters | ||
| watercourse | 11 | |
| 13 letters | ||
| rolling stone | 13 | |
| 14 letters | ||
| stepping-stone | 14 | |