| M SG | M PL | F SG | F PL | N SG | N PL | |
| NOM | ? (rule) | inutiliēs (rule) | ? (rule) | ? (rule) | inutile (rule) | inutilia (rule) |
| GEN | ? (rule) | ? (rule) | ? (rule) | ? (rule) | ? (rule) | ? (rule) |
| DAT | ? (rule) | ? (rule) | ? (rule) | inutilibus (rule) | ? (rule) | inutilibus (rule) |
| ACC | inutiliem (rule) | ? (rule) | ? (rule) | ? (rule) | inutile (rule) | inutilia (rule) |
| ABL | inutilē (rule) | ? (rule) | ? (rule) | ? (rule) | ? (rule) | inutilibus (rule) |
| VOC | ? (rule) | ? (rule) | ? (rule) | ? (rule) | ? (rule) | ? (rule) |