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