| Erpichtheit | Nominativ, Singular | nominative case, singular | |
| Erpichtheite | Genitiv, Singular | genitive case, singular | |
| Erpichtheiten | Dativ, Singular | dative case, singular | |
| Erpichtheit(e)s | Akkusativ, Singular | accusative case, singular | |
| Erpichtheiter | Nominativ, Plural | nominative case, plural | |
| Erpichtheitern | Genitiv, Plural | genitive case, plural | |
| Erpichtheitn | Dativ, Plural | dative case, plural |