| Sg | Pl | |
| Nom | fundr | fundar (rule) |
| Acc | fund (rule) | funda (rule) |
| Dat | fundi (rule) | fundum (rule) |
| Gen | funds (rule) | funda (rule) |
| Sg | Pl | |
| Nom | fundrinn (rule) | fundarnir (rule) |
| Acc | fundinn (rule) | fundana (rule) |
| Dat | fundinum (rule) | fundunum (rule) |
| Gen | fundsins (rule) | fundanna (rule) |