| Sg | Pl | |
| Nom | dóttir | dóttirar (rule) |
| Acc | dóttur (rule) | dóttirar (rule) |
| Dat | dóttir (rule) | dóttirum (rule) |
| Gen | dóttirar (rule) | dóttira (rule) |
| Sg | Pl | |
| Nom | dóttirin (rule) | dóttirarnar (rule) |
| Acc | dótturina (rule) | dóttirarnar (rule) |
| Dat | dóttirinni (rule) | dóttirunum (rule) |
| Gen | dóttirarinnar (rule) | dóttiranna (rule) |