| Singular | Plural | |
|---|---|---|
| Nominativ | defetiscentia | defetiscentiae |
| Genitiv | defetiscentiae, defetiscentiai | defetiscentiarum |
| Dativ | defetiscentiae, defetiscentiai | defetiscentiis, defetiscentiabus |
| Akkusativ | defetiscentiam | defetiscentias |
| Ablativ | defetiscentiad, defetiscentia | defetiscentiabus, defetiscentiis |
| Vokativ | defetiscentia | defetiscentiae |