| Sg | Pl | |
| Nom | sultr | sultar (rule) |
| Acc | sult (rule) | sulta (rule) |
| Dat | sulti (rule) | sultum (rule) |
| Gen | sultar (rule) | sulta (rule) |
| Sg | Pl | |
| Nom | sultrinn (rule) | sultarnir (rule) |
| Acc | sultinn (rule) | sultana (rule) |
| Dat | sultinum (rule) | sultunum (rule) |
| Gen | sultarins (rule) | sultanna (rule) |