| Sg | Pl | |
| Nom | eggskurn | eggskurnar (rule) |
| Acc | eggskurn (rule) | eggskurnar (rule) |
| Dat | eggskurn (rule) | eggskurnum (rule) |
| Gen | eggskurnar (rule) | eggskurna (rule) |
| Sg | Pl | |
| Nom | eggskurnin (rule) | eggskurnarnar (rule) |
| Acc | eggskurnina (rule) | eggskurnarnar (rule) |
| Dat | eggskurninni (rule) | eggskurnunum (rule) |
| Gen | eggskurnarinnar (rule) | eggskurnanna (rule) |