Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | ĭneffĭcax |
| Gen. | inefficacis |
| Dat. | inefficaci |
| Acc. | inefficacem |
| Abl. | inefficaci |
| Voc. | ĭneffĭcax |
| PLURIEL |
| Nom. | inefficaces |
| Gen. | inefficacĭum |
| Dat. | inefficacĭbus |
| Acc. | inefficaces |
| Abl. | inefficacĭbus |
| Voc. | inefficaces |
| SINGULIER |
| Nom. | ĭneffĭcax |
| Gen. | inefficacis |
| Dat. | inefficaci |
| Acc. | inefficacem |
| Abl. | inefficaci |
| Voc. | ĭneffĭcax |
| PLURIEL |
| Nom. | inefficaces |
| Gen. | inefficacĭum |
| Dat. | inefficacĭbus |
| Acc. | inefficaces |
| Abl. | inefficacĭbus |
| Voc. | inefficaces |
| SINGULIER |
| Nom. | ĭneffĭcax |
| Gen. | inefficacis |
| Dat. | inefficaci |
| Acc. | ĭneffĭcax |
| Abl. | inefficaci |
| Voc. | ĭneffĭcax |
| PLURIEL |
| Nom. | inefficacĭa |
| Gen. | inefficacĭum |
| Dat. | inefficacĭbus |
| Acc. | inefficacĭa |
| Abl. | inefficacĭbus | |