| Singular | Plural | |
|---|---|---|
| Nominativ | diaphonia | diaphoniae |
| Genitiv | diaphoniae, diaphoniai | diaphonium, diaphoniarum |
| Dativ | diaphoniae, diaphoniai | diaphoniis, diaphoniabus |
| Akkusativ | diaphoniam | diaphonias |
| Ablativ | diaphonia, diaphoniad | diaphoniis, diaphoniabus |
| Vokativ | diaphonia | diaphoniae |