| Singular | Plural | |
|---|---|---|
| Nominativ | directoriom, directorium | directoria |
| Genitiv | directorii | directoriorum, directorium |
| Dativ | directorio | directoriis |
| Akkusativ | directorium | directoria |
| Ablativ | directorio | directoriis |
| Vokativ | directorium | directoria |
12 (14) Formen für „directorium“