| Addisonismus | Nominativ, Singular | nominative case, singular | |
| Addisonismus(e)s | Genitiv, Singular | genitive case, singular | |
| Addisonismus(e) | Dativ, Singular | dative case, singular | |
| Addisonismus | Akkusativ, Singular | accusative case, singular | |
| Addisonismuse | Nominativ, Plural | nominative case, plural | |
| Addisonismuse | Genitiv, Plural | genitive case, plural | |
| Addisonismusen | Dativ, Plural | dative case, plural | |
| Addisonismuse | Akkusativ, Plural | accusative case, plural |