| Singular | Plural | |
|---|---|---|
| Nominativ | excursus | excursuus, excursus |
| Genitiv | excursus | excursuum, exscursum, excursum |
| Dativ | excursu, excursui | excursibusque, excursubus, excursibus |
| Akkusativ | exscursum, excursum | excursuus, excursus |
| Ablativ | excursu | excursibus, excursibusque, excursubus |
| Vokativ | excursus | excursuus, excursus |