| Atomunfall | Nominativ, Singular | nominative case, singular | |
| Atomunfall(e)s | Genitiv, Singular | genitive case, singular | |
| Atomunfall(e) | Dativ, Singular | dative case, singular | |
| Atomunfall | Akkusativ, Singular | accusative case, singular | |
| Atomunfalle | Nominativ, Plural | nominative case, plural | |
| Atomunfalle | Genitiv, Plural | genitive case, plural | |
| Atomunfallen | Dativ, Plural | dative case, plural | |
| Atomunfalle | Akkusativ, Plural | accusative case, plural |