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