| Sg. Indef. | fjǫrr |
| Sg. Def. | fjǫrrinn |
| Pl. Indef. | fjǫrvar |
| Pl. Def. | fjǫrvarnir |
| Sg. Indef. | fjǫrs |
| Sg. Def. | fjǫrsins |
| Pl. Indef. | fjǫrva |
| Pl. Def. | fjǫrvanna |
| Sg. Indef. | fjǫrvi |
| Sg. Def. | fjǫrvinum |
| Pl. Indef. | fjǫrum |
| Pl. Def. | fjǫrunum |
| Sg. Indef. | fjǫr |
| Sg. Def. | fjǫrinn |
| Pl. Indef. | fjǫrva |
| Pl. Def. | fjǫrvana |