| Sg. Indef. | bruður |
| Sg. Def. | bruðurin |
| Pl. Indef. | brunnar |
| Pl. Def. | brunnarnir |
| Sg. Indef. | bruns |
| Sg. Def. | brunsins |
| Pl. Indef. | brunna |
| Pl. Def. | brunnanna |
| Sg. Indef. | brunni |
| Sg. Def. | brunninum |
| Pl. Indef. | brunnum |
| Pl. Def. | brunnunum |
| Sg. Indef. | brunn |
| Sg. Def. | brunnin |
| Pl. Indef. | brunnar |
| Pl. Def. | brunnarnar |