| Singular | Plural | |
|---|---|---|
| Nominativ | faenisicia | faenisiciae |
| Genitiv | faenisiciae, faenisiciai | faenisiciarum, faenisicium |
| Dativ | faenisiciae, faenisiciai | faenisiciis, faenisiciabus |
| Akkusativ | faenisiciam | faenisicias |
| Ablativ | faenisicia, faenisiciad | faenisiciis, faenisiciabus |
| Vokativ | faenisicia | faenisiciae |