出典:Wiktionary
Third declension.
| Case | Singular | Plural |
|---|---|---|
| Nominative | cōpulātiō | cōpulātiōnēs |
| Genitive | cōpulātiōnis | cōpulātiōnum |
| Dative | cōpulātiōnī | cōpulātiōnibus |
| Accusative | cōpulātiōnem | cōpulātiōnēs |
| Ablative | cōpulātiōne | cōpulātiōnibus |
| Vocative | cōpulātiō | cōpulātiōnēs |