| Sg | Pl | |
| Nom | hlutr | hlutir (rule) |
| Acc | hlut (rule) | hluti (rule) |
| Dat | hluti (rule) | hlutum (rule) |
| Gen | hluts (rule) | hluta (rule) |
| Sg | Pl | |
| Nom | hlutrinn (rule) | hlutirnir (rule) |
| Acc | hlutinn (rule) | hlutina (rule) |
| Dat | hlutinum (rule) | hlutunum (rule) |
| Gen | hlutsins (rule) | hlutanna (rule) |