Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | rationalis |
| Gen. | rationalis |
| Dat. | rationali |
| Acc. | rationalem |
| Abl. | rationali |
| Voc. | rationalis |
| PLURIEL |
| Nom. | rationales |
| Gen. | rationalĭum |
| Dat. | rationalĭbus |
| Acc. | rationales |
| Abl. | rationalĭbus |
| Voc. | rationales |
| SINGULIER |
| Nom. | rationalis |
| Gen. | rationalis |
| Dat. | rationali |
| Acc. | rationalem |
| Abl. | rationali |
| Voc. | rationalis |
| PLURIEL |
| Nom. | rationales |
| Gen. | rationalĭum |
| Dat. | rationalĭbus |
| Acc. | rationales |
| Abl. | rationalĭbus |
| Voc. | rationales |
| SINGULIER |
| Nom. | rationale |
| Gen. | rationalis |
| Dat. | rationali |
| Acc. | rationale |
| Abl. | rationali |
| Voc. | rationale |
| PLURIEL |
| Nom. | rationalĭa |
| Gen. | rationalĭum |
| Dat. | rationalĭbus |
| Acc. | rationalĭa |
| Abl. | rationalĭbus | |