| Singular | Plural | |
|---|---|---|
| Nominativ | gymnasium, gymnasiumque, gymnasium | gymnasia, gymnasia |
| Genitiv | gymnasi, gymnasi, gymnasii, gymnasii | gymnasiorum, gymnasiorum, gymnasium, gymnasiumque, gymnasium |
| Dativ | gymnasio, gymnasio | gymnasiis, gymnasiis |
| Akkusativ | gymnasium, gymnasiumque, gymnasium | gymnasia, gymnasia |
| Ablativ | gymnasio, gymnasio | gymnasiis, gymnasiis |
| Vokativ | gymnasium, gymnasiumque, gymnasium | gymnasia, gymnasia |