| Sg. Indef. | royður |
| Sg. Def. | royðurin |
| Pl. Indef. | royðrar |
| Pl. Def. | royðrarnar |
| Sg. Indef. | royðrar |
| Sg. Def. | royðrarinnar |
| Pl. Indef. | royðra |
| Pl. Def. | royðranna |
| Sg. Indef. | royður |
| Sg. Def. | royðrini |
| Pl. Indef. | royðrum |
| Pl. Def. | royðrunum |
| Sg. Indef. | royður |
| Sg. Def. | royðrina |
| Pl. Indef. | royðrar |
| Pl. Def. | royðrarnar |