Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | longaevus |
| Gen. | longaevi |
| Dat. | longaevo |
| Acc. | longaevum |
| Abl. | longaevo |
| Voc. | longaeve |
| PLURIEL |
| Nom. | longaevi |
| Gen. | longaevōrum |
| Dat. | longaevis |
| Acc. | longaevos |
| Abl. | longaevis |
| Voc. | longaevi |
| SINGULIER |
| Nom. | longaevă |
| Gen. | longaevae |
| Dat. | longaevae |
| Acc. | longaevam |
| Abl. | longaevā |
| Voc. | longaevă |
| PLURIEL |
| Nom. | longaevae |
| Gen. | longaevārum |
| Dat. | longaevis |
| Acc. | longaevas |
| Abl. | longaevis |
| Voc. | longaevae |
| SINGULIER |
| Nom. | longaevum |
| Gen. | longaevi |
| Dat. | longaevo |
| Acc. | longaevum |
| Abl. | longaevo |
| Voc. | longaevum |
| PLURIEL |
| Nom. | longaeva |
| Gen. | longaevōrum |
| Dat. | longaevis |
| Acc. | longaeva |
| Abl. | longaevis | |