Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | octavus |
| Gen. | octavi |
| Dat. | octavo |
| Acc. | octavum |
| Abl. | octavo |
| Voc. | octave |
| PLURIEL |
| Nom. | octavi |
| Gen. | octavōrum |
| Dat. | octavis |
| Acc. | octavos |
| Abl. | octavis |
| Voc. | octavi |
| SINGULIER |
| Nom. | octavă |
| Gen. | octavae |
| Dat. | octavae |
| Acc. | octavam |
| Abl. | octavā |
| Voc. | octavă |
| PLURIEL |
| Nom. | octavae |
| Gen. | octavārum |
| Dat. | octavis |
| Acc. | octavas |
| Abl. | octavis |
| Voc. | octavae |
| SINGULIER |
| Nom. | octavum |
| Gen. | octavi |
| Dat. | octavo |
| Acc. | octavum |
| Abl. | octavo |
| Voc. | octavum |
| PLURIEL |
| Nom. | octava |
| Gen. | octavōrum |
| Dat. | octavis |
| Acc. | octava |
| Abl. | octavis | |