| Singular | Plural | |
|---|---|---|
| Nominativ | gladius | gladii |
| Genitiv | gladii, cladi | gladiorumque, gladiorum |
| Dativ | gladio, gladioque | gladiis, gladiisque |
| Akkusativ | gladiom, cladium, gladiumque | gladiosque, gladios |
| Ablativ | gladio, gladioque | gladiis, gladiisque |
| Vokativ | gladie | gladii |