| Singular | Plural | |
|---|---|---|
| Nominativ | inane | inania, autinania |
| Genitiv | inanis, huinanis, inanissima, inanissimi, inanissimis | inanium, inanum |
| Dativ | inane, inani, inaniter, inaniora | inanibus |
| Akkusativ | inane | inania, autinania |
| Ablativ | inani, inane, inaniter, inaniora | inanibus |
| Vokativ | inane | inania, autinania |
12 (28) Formen für „inane“