| Singular | Plural | |
|---|---|---|
| Nominativ | subsidium, subsidiumque | subsidia, subsidiaque |
| Genitiv | subsidi, subsidii | subsidiorum, subsidium, subsidiumque |
| Dativ | subsidio | subsidiis |
| Akkusativ | subsidium, subsidiumque | subsidia, subsidiaque |
| Ablativ | subsidio | subsidiis |
| Vokativ | subsidium, subsidiumque | subsidia, subsidiaque |