| Unterdampf | Nominativ, Singular | nominative case, singular | |
| Unterdampf(e)s | Genitiv, Singular | genitive case, singular | |
| Unterdampf(e) | Dativ, Singular | dative case, singular | |
| Unterdampf | Akkusativ, Singular | accusative case, singular | |
| Unterdampfe | Nominativ, Plural | nominative case, plural | |
| Unterdampfe | Genitiv, Plural | genitive case, plural | |
| Unterdampfen | Dativ, Plural | dative case, plural | |
| Unterdampfe | Akkusativ, Plural | accusative case, plural |