| Sg. Indef. | skúfur |
| Sg. Def. | skúfurinn |
| Pl. Indef. | skúfar |
| Pl. Def. | skúfarnir |
| Sg. Indef. | skúfs |
| Sg. Def. | skúfsins |
| Pl. Indef. | skúfa |
| Pl. Def. | skúfanna |
| Sg. Indef. | skúf; skúfi |
| Sg. Def. | skúfnum; skúfinum |
| Pl. Indef. | skúfum |
| Pl. Def. | skúfunum |
| Sg. Indef. | skúf |
| Sg. Def. | skúfinn |
| Pl. Indef. | skúfa |
| Pl. Def. | skúfana |