| Singular | Plural | |
|---|---|---|
| Nominativ | spiritus, spiritusque | spiritusque, spirituos, spirituus, spiritus |
| Genitiv | spiritusque, spiriti, spiritus, spiritos | spirituum |
| Dativ | spiritui | spiritubus, spiritibus |
| Akkusativ | spiritum, spiritumque | spiritusque, spirituos, spirituus, spiritus |
| Ablativ | spirituque, spiritu | spiritubus, spiritibus |
| Vokativ | spiritusque, spiritus | spiritusque, spirituos, spirituus, spiritus |