| Sg | Pl | |
| 1st | herja (rule) | herjum (rule) |
| 2nd | herjar (rule) | herið (rule) |
| 3rd | herjar (rule) | herja (rule) |
| Sg | Pl | |
| 1st | herjaða (rule) | herjuðum (rule) |
| 2nd | herjaðir (rule) | herjuðuð (rule) |
| 3rd | herjaði (rule) | herjuðu (rule) |
| Sg | Pl | |
| 1st | herjumk (rule) | herjumk (rule) |
| 2nd | herjask (rule) | herizk (rule) |
| 3rd | herjask (rule) | herjask (rule) |
| Sg | Pl | |
| 1st | herjaðumk (rule) | herjuðumsk (rule) |
| 2nd | herjaðisk (rule) | herjuðuzk (rule) |
| 3rd | herjaðisk (rule) | herjuðusk (rule) |
| Sg | Pl | |
| 1 | herja (rule) | herim (rule) |
| 2 | herir (rule) | herið (rule) |
| 3 | heri (rule) | heri (rule) |
| Sg | Pl | |
| 1 | herjaða (rule) | herjaðim (rule) |
| 2 | herjaðir (rule) | herjaðið (rule) |
| 3 | herjaði (rule) | herjaði (rule) |
| Form | |
| Participle | herjandi (rule) |
| Past participle | herjaðr (rule) |
| Middle infinitive | herjask (rule) |
| Sg | |
| 2nd | herja (rule) |