Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | comperpetuus |
| Gen. | comperpetui |
| Dat. | comperpetuo |
| Acc. | comperpetuum |
| Abl. | comperpetuo |
| Voc. | comperpetue |
| PLURIEL |
| Nom. | comperpetui |
| Gen. | comperpetuōrum |
| Dat. | comperpetuis |
| Acc. | comperpetuos |
| Abl. | comperpetuis |
| Voc. | comperpetui |
| SINGULIER |
| Nom. | comperpetuă |
| Gen. | comperpetuae |
| Dat. | comperpetuae |
| Acc. | comperpetuam |
| Abl. | comperpetuā |
| Voc. | comperpetuă |
| PLURIEL |
| Nom. | comperpetuae |
| Gen. | comperpetuārum |
| Dat. | comperpetuis |
| Acc. | comperpetuas |
| Abl. | comperpetuis |
| Voc. | comperpetuae |
| SINGULIER |
| Nom. | comperpetuum |
| Gen. | comperpetui |
| Dat. | comperpetuo |
| Acc. | comperpetuum |
| Abl. | comperpetuo |
| Voc. | comperpetuum |
| PLURIEL |
| Nom. | comperpetua |
| Gen. | comperpetuōrum |
| Dat. | comperpetuis |
| Acc. | comperpetua |
| Abl. | comperpetuis | |