| Sg | Pl | |
| 1st | skelf (rule) | skjálfum (rule) |
| 2nd | skelfr (rule) | skjálfið (rule) |
| 3rd | skelfr (rule) | skjálfa (rule) |
| Sg | Pl | |
| 1st | skalf (rule) | skulfum (rule) |
| 2nd | skalft (rule) | skulfuð (rule) |
| 3rd | skalf (rule) | skulfu (rule) |
| Sg | Pl | |
| 1st | skjálfumk (rule) | skjálfumk (rule) |
| 2nd | skelfsk (rule) | skjálfizk (rule) |
| 3rd | skelfsk (rule) | skjálfask (rule) |
| Sg | Pl | |
| 1st | ? (rule) | skulfumsk (rule) |
| 2nd | ? (rule) | skulfuzk (rule) |
| 3rd | skalfsk (rule) | skulfusk (rule) |
| Sg | Pl | |
| 1 | skjálfa (rule) | skjálfim (rule) |
| 2 | skjálfir (rule) | skjálfið (rule) |
| 3 | skjálfi (rule) | skjálfi (rule) |
| Sg | Pl | |
| 1 | skylfa (rule) | skylfim (rule) |
| 2 | skylfir (rule) | skylfið (rule) |
| 3 | skylfi (rule) | skylfi (rule) |
| Form | |
| Participle | skjálfandi (rule) |
| Past participle | skolfinn (rule) |
| Middle infinitive | skjálfask (rule) |
| Sg | |
| 2nd | skjálf (rule) |