Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | inperpetuus |
| Gen. | inperpetui |
| Dat. | inperpetuo |
| Acc. | inperpetuum |
| Abl. | inperpetuo |
| Voc. | inperpetue |
| PLURIEL |
| Nom. | inperpetui |
| Gen. | inperpetuōrum |
| Dat. | inperpetuis |
| Acc. | inperpetuos |
| Abl. | inperpetuis |
| Voc. | inperpetui |
| SINGULIER |
| Nom. | inperpetuă |
| Gen. | inperpetuae |
| Dat. | inperpetuae |
| Acc. | inperpetuam |
| Abl. | inperpetuā |
| Voc. | inperpetuă |
| PLURIEL |
| Nom. | inperpetuae |
| Gen. | inperpetuārum |
| Dat. | inperpetuis |
| Acc. | inperpetuas |
| Abl. | inperpetuis |
| Voc. | inperpetuae |
| SINGULIER |
| Nom. | inperpetuum |
| Gen. | inperpetui |
| Dat. | inperpetuo |
| Acc. | inperpetuum |
| Abl. | inperpetuo |
| Voc. | inperpetuum |
| PLURIEL |
| Nom. | inperpetua |
| Gen. | inperpetuōrum |
| Dat. | inperpetuis |
| Acc. | inperpetua |
| Abl. | inperpetuis | |