| 1 | Frankish | werru | confusion, riot; riot, disturbance, quarrel;... |
| 2 | Proto-Germanic | werrō | confusion, disarray; conflict, strife |
| 3 | Proto-Germanic | werzō | — |
| 4 | Proto-Indo-European | wers- | to wipe; peak, height |
| 5 | Proto-Indo-European | wer- | to burn; to cover, heed, notice; squirrel |