| Sg. Indef. | stígur |
| Sg. Def. | stígurinn |
| Pl. Indef. | stígar; stígir |
| Pl. Def. | stígarnir; stígirnir |
| Sg. Indef. | stígs |
| Sg. Def. | stígsins |
| Pl. Indef. | stíga |
| Pl. Def. | stíganna |
| Sg. Indef. | stíg |
| Sg. Def. | stígnum |
| Pl. Indef. | stígum |
| Pl. Def. | stígunum |
| Sg. Indef. | stíg |
| Sg. Def. | stíginn |
| Pl. Indef. | stíga; stígi |
| Pl. Def. | stígana; stígina |