Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | amphitheatrum |
| Gen. | amphitheatri |
| Dat. | amphitheatro |
| Acc. | amphitheatrum |
| Abl. | amphitheatro |
| Voc. | amphitheatrum |
| PLURIEL |
| Nom. | amphitheatra |
| Gen. | amphitheatrōrum |
| Dat. | amphitheatris |
| Acc. | amphitheatra |
| Abl. | amphitheatris | |